21238100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^2$

素因数の和:106

約数の個数: 108

約数和(自身を含む): 54301212

約数和(自身を除く): 33063112

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 25, 26, 31, 34, 50, 52, 62, 65, 68, 85, 100, 124, 130, 155, 170, 221, 260, 310, 325, 340, 403, 425, 442, 527, 620, 650, 775, 806, 850, 884, 961, 1054, 1105, 1300, 1550, 1612, 1700, 1922, 2015, 2108, 2210, 2635, 3100, 3844, 4030, 4420, 4805, 5270, 5525, 6851, 8060, 9610, 10075, 10540, 11050, 12493, 13175, 13702, 16337, 19220, 20150, 22100, 24025, 24986, 26350, 27404, 32674, 34255, 40300, 48050, 49972, 52700, 62465, 65348, 68510, 81685, 96100, 124930, 137020, 163370, 171275, 212381, 249860, 312325, 326740, 342550, 408425, 424762, 624650, 685100, 816850, 849524, 1061905, 1249300, 1633700, 2123810, 4247620, 5309525, 10619050, 21238100]

約数ペア:

[(1, 21238100), (2, 10619050), (4, 5309525), (5, 4247620), (10, 2123810), (13, 1633700), (17, 1249300), (20, 1061905), (25, 849524), (26, 816850), (31, 685100), (34, 624650), (50, 424762), (52, 408425), (62, 342550), (65, 326740), (68, 312325), (85, 249860), (100, 212381), (124, 171275), (130, 163370), (155, 137020), (170, 124930), (221, 96100), (260, 81685), (310, 68510), (325, 65348), (340, 62465), (403, 52700), (425, 49972), (442, 48050), (527, 40300), (620, 34255), (650, 32674), (775, 27404), (806, 26350), (850, 24986), (884, 24025), (961, 22100), (1054, 20150), (1105, 19220), (1300, 16337), (1550, 13702), (1612, 13175), (1700, 12493), (1922, 11050), (2015, 10540), (2108, 10075), (2210, 9610), (2635, 8060), (3100, 6851), (3844, 5525), (4030, 5270), (4420, 4805)]