20210450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:132

約数の個数: 96

約数和(自身を含む): 44997120

約数和(自身を除く): 24786670

約数列:

[1, 2, 5, 10, 13, 17, 25, 26, 31, 34, 50, 59, 62, 65, 85, 118, 130, 155, 170, 221, 295, 310, 325, 403, 425, 442, 527, 590, 650, 767, 775, 806, 850, 1003, 1054, 1105, 1475, 1534, 1550, 1829, 2006, 2015, 2210, 2635, 2950, 3658, 3835, 4030, 5015, 5270, 5525, 6851, 7670, 9145, 10030, 10075, 11050, 13039, 13175, 13702, 18290, 19175, 20150, 23777, 25075, 26078, 26350, 31093, 34255, 38350, 45725, 47554, 50150, 62186, 65195, 68510, 91450, 118885, 130390, 155465, 171275, 237770, 310930, 325975, 342550, 404209, 594425, 651950, 777325, 808418, 1188850, 1554650, 2021045, 4042090, 10105225, 20210450]

約数ペア:

[(1, 20210450), (2, 10105225), (5, 4042090), (10, 2021045), (13, 1554650), (17, 1188850), (25, 808418), (26, 777325), (31, 651950), (34, 594425), (50, 404209), (59, 342550), (62, 325975), (65, 310930), (85, 237770), (118, 171275), (130, 155465), (155, 130390), (170, 118885), (221, 91450), (295, 68510), (310, 65195), (325, 62186), (403, 50150), (425, 47554), (442, 45725), (527, 38350), (590, 34255), (650, 31093), (767, 26350), (775, 26078), (806, 25075), (850, 23777), (1003, 20150), (1054, 19175), (1105, 18290), (1475, 13702), (1534, 13175), (1550, 13039), (1829, 11050), (2006, 10075), (2015, 10030), (2210, 9145), (2635, 7670), (2950, 6851), (3658, 5525), (3835, 5270), (4030, 5015)]