21200400

素因数分解:

$2^4\times 3^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{151}}^1$

素因数の和:191

約数の個数: 240

約数和(自身を含む): 81800320

約数和(自身を除く): 60599920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 25, 26, 27, 30, 36, 39, 40, 45, 48, 50, 52, 54, 60, 65, 72, 75, 78, 80, 90, 100, 104, 108, 117, 120, 130, 135, 144, 150, 151, 156, 180, 195, 200, 208, 216, 225, 234, 240, 260, 270, 300, 302, 312, 325, 351, 360, 390, 400, 432, 450, 453, 468, 520, 540, 585, 600, 604, 624, 650, 675, 702, 720, 755, 780, 900, 906, 936, 975, 1040, 1080, 1170, 1200, 1208, 1300, 1350, 1359, 1404, 1510, 1560, 1755, 1800, 1812, 1872, 1950, 1963, 2160, 2265, 2340, 2416, 2600, 2700, 2718, 2808, 2925, 3020, 3120, 3510, 3600, 3624, 3775, 3900, 3926, 4077, 4530, 4680, 5200, 5400, 5436, 5616, 5850, 5889, 6040, 6795, 7020, 7248, 7550, 7800, 7852, 8154, 8775, 9060, 9360, 9815, 10800, 10872, 11325, 11700, 11778, 12080, 13590, 14040, 15100, 15600, 15704, 16308, 17550, 17667, 18120, 19630, 20385, 21744, 22650, 23400, 23556, 27180, 28080, 29445, 30200, 31408, 32616, 33975, 35100, 35334, 36240, 39260, 40770, 45300, 46800, 47112, 49075, 53001, 54360, 58890, 60400, 65232, 67950, 70200, 70668, 78520, 81540, 88335, 90600, 94224, 98150, 101925, 106002, 108720, 117780, 135900, 140400, 141336, 147225, 157040, 163080, 176670, 181200, 196300, 203850, 212004, 235560, 265005, 271800, 282672, 294450, 326160, 353340, 392600, 407700, 424008, 441675, 471120, 530010, 543600, 588900, 706680, 785200, 815400, 848016, 883350, 1060020, 1177800, 1325025, 1413360, 1630800, 1766700, 2120040, 2355600, 2650050, 3533400, 4240080, 5300100, 7066800, 10600200, 21200400]

約数ペア:

[(1, 21200400), (2, 10600200), (3, 7066800), (4, 5300100), (5, 4240080), (6, 3533400), (8, 2650050), (9, 2355600), (10, 2120040), (12, 1766700), (13, 1630800), (15, 1413360), (16, 1325025), (18, 1177800), (20, 1060020), (24, 883350), (25, 848016), (26, 815400), (27, 785200), (30, 706680), (36, 588900), (39, 543600), (40, 530010), (45, 471120), (48, 441675), (50, 424008), (52, 407700), (54, 392600), (60, 353340), (65, 326160), (72, 294450), (75, 282672), (78, 271800), (80, 265005), (90, 235560), (100, 212004), (104, 203850), (108, 196300), (117, 181200), (120, 176670), (130, 163080), (135, 157040), (144, 147225), (150, 141336), (151, 140400), (156, 135900), (180, 117780), (195, 108720), (200, 106002), (208, 101925), (216, 98150), (225, 94224), (234, 90600), (240, 88335), (260, 81540), (270, 78520), (300, 70668), (302, 70200), (312, 67950), (325, 65232), (351, 60400), (360, 58890), (390, 54360), (400, 53001), (432, 49075), (450, 47112), (453, 46800), (468, 45300), (520, 40770), (540, 39260), (585, 36240), (600, 35334), (604, 35100), (624, 33975), (650, 32616), (675, 31408), (702, 30200), (720, 29445), (755, 28080), (780, 27180), (900, 23556), (906, 23400), (936, 22650), (975, 21744), (1040, 20385), (1080, 19630), (1170, 18120), (1200, 17667), (1208, 17550), (1300, 16308), (1350, 15704), (1359, 15600), (1404, 15100), (1510, 14040), (1560, 13590), (1755, 12080), (1800, 11778), (1812, 11700), (1872, 11325), (1950, 10872), (1963, 10800), (2160, 9815), (2265, 9360), (2340, 9060), (2416, 8775), (2600, 8154), (2700, 7852), (2718, 7800), (2808, 7550), (2925, 7248), (3020, 7020), (3120, 6795), (3510, 6040), (3600, 5889), (3624, 5850), (3775, 5616), (3900, 5436), (3926, 5400), (4077, 5200), (4530, 4680)]