21278250

素因数分解:

$2^1\times 3^2\times 5^3\times 7^2\times {\mathrm{193}}^1$

素因数の和:230

約数の個数: 144

約数和(自身を含む): 67276872

約数和(自身を除く): 45998622

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 25, 30, 35, 42, 45, 49, 50, 63, 70, 75, 90, 98, 105, 125, 126, 147, 150, 175, 193, 210, 225, 245, 250, 294, 315, 350, 375, 386, 441, 450, 490, 525, 579, 630, 735, 750, 875, 882, 965, 1050, 1125, 1158, 1225, 1351, 1470, 1575, 1737, 1750, 1930, 2205, 2250, 2450, 2625, 2702, 2895, 3150, 3474, 3675, 4053, 4410, 4825, 5250, 5790, 6125, 6755, 7350, 7875, 8106, 8685, 9457, 9650, 11025, 12159, 12250, 13510, 14475, 15750, 17370, 18375, 18914, 20265, 22050, 24125, 24318, 28371, 28950, 33775, 36750, 40530, 43425, 47285, 48250, 55125, 56742, 60795, 67550, 72375, 85113, 86850, 94570, 101325, 110250, 121590, 141855, 144750, 168875, 170226, 202650, 217125, 236425, 283710, 303975, 337750, 425565, 434250, 472850, 506625, 607950, 709275, 851130, 1013250, 1182125, 1418550, 1519875, 2127825, 2364250, 3039750, 3546375, 4255650, 7092750, 10639125, 21278250]

約数ペア:

[(1, 21278250), (2, 10639125), (3, 7092750), (5, 4255650), (6, 3546375), (7, 3039750), (9, 2364250), (10, 2127825), (14, 1519875), (15, 1418550), (18, 1182125), (21, 1013250), (25, 851130), (30, 709275), (35, 607950), (42, 506625), (45, 472850), (49, 434250), (50, 425565), (63, 337750), (70, 303975), (75, 283710), (90, 236425), (98, 217125), (105, 202650), (125, 170226), (126, 168875), (147, 144750), (150, 141855), (175, 121590), (193, 110250), (210, 101325), (225, 94570), (245, 86850), (250, 85113), (294, 72375), (315, 67550), (350, 60795), (375, 56742), (386, 55125), (441, 48250), (450, 47285), (490, 43425), (525, 40530), (579, 36750), (630, 33775), (735, 28950), (750, 28371), (875, 24318), (882, 24125), (965, 22050), (1050, 20265), (1125, 18914), (1158, 18375), (1225, 17370), (1351, 15750), (1470, 14475), (1575, 13510), (1737, 12250), (1750, 12159), (1930, 11025), (2205, 9650), (2250, 9457), (2450, 8685), (2625, 8106), (2702, 7875), (2895, 7350), (3150, 6755), (3474, 6125), (3675, 5790), (4053, 5250), (4410, 4825)]