21655920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{631}}^1$

素因数の和:671

約数の個数: 160

約数和(自身を含む): 78994944

約数和(自身を除く): 57339024

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 16, 20, 22, 24, 26, 30, 33, 39, 40, 44, 48, 52, 55, 60, 65, 66, 78, 80, 88, 104, 110, 120, 130, 132, 143, 156, 165, 176, 195, 208, 220, 240, 260, 264, 286, 312, 330, 390, 429, 440, 520, 528, 572, 624, 631, 660, 715, 780, 858, 880, 1040, 1144, 1262, 1320, 1430, 1560, 1716, 1893, 2145, 2288, 2524, 2640, 2860, 3120, 3155, 3432, 3786, 4290, 5048, 5720, 6310, 6864, 6941, 7572, 8203, 8580, 9465, 10096, 11440, 12620, 13882, 15144, 16406, 17160, 18930, 20823, 24609, 25240, 27764, 30288, 32812, 34320, 34705, 37860, 41015, 41646, 49218, 50480, 55528, 65624, 69410, 75720, 82030, 83292, 90233, 98436, 104115, 111056, 123045, 131248, 138820, 151440, 164060, 166584, 180466, 196872, 208230, 246090, 270699, 277640, 328120, 333168, 360932, 393744, 416460, 451165, 492180, 541398, 555280, 656240, 721864, 832920, 902330, 984360, 1082796, 1353495, 1443728, 1665840, 1804660, 1968720, 2165592, 2706990, 3609320, 4331184, 5413980, 7218640, 10827960, 21655920]

約数ペア:

[(1, 21655920), (2, 10827960), (3, 7218640), (4, 5413980), (5, 4331184), (6, 3609320), (8, 2706990), (10, 2165592), (11, 1968720), (12, 1804660), (13, 1665840), (15, 1443728), (16, 1353495), (20, 1082796), (22, 984360), (24, 902330), (26, 832920), (30, 721864), (33, 656240), (39, 555280), (40, 541398), (44, 492180), (48, 451165), (52, 416460), (55, 393744), (60, 360932), (65, 333168), (66, 328120), (78, 277640), (80, 270699), (88, 246090), (104, 208230), (110, 196872), (120, 180466), (130, 166584), (132, 164060), (143, 151440), (156, 138820), (165, 131248), (176, 123045), (195, 111056), (208, 104115), (220, 98436), (240, 90233), (260, 83292), (264, 82030), (286, 75720), (312, 69410), (330, 65624), (390, 55528), (429, 50480), (440, 49218), (520, 41646), (528, 41015), (572, 37860), (624, 34705), (631, 34320), (660, 32812), (715, 30288), (780, 27764), (858, 25240), (880, 24609), (1040, 20823), (1144, 18930), (1262, 17160), (1320, 16406), (1430, 15144), (1560, 13882), (1716, 12620), (1893, 11440), (2145, 10096), (2288, 9465), (2524, 8580), (2640, 8203), (2860, 7572), (3120, 6941), (3155, 6864), (3432, 6310), (3786, 5720), (4290, 5048)]