20198100

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{5179}}^1$

素因数の和:5209

約数の個数: 72

約数和(自身を含む): 62947360

約数和(自身を除く): 42749260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 5179, 10358, 15537, 20716, 25895, 31074, 51790, 62148, 67327, 77685, 103580, 129475, 134654, 155370, 201981, 258950, 269308, 310740, 336635, 388425, 403962, 517900, 673270, 776850, 807924, 1009905, 1346540, 1553700, 1683175, 2019810, 3366350, 4039620, 5049525, 6732700, 10099050, 20198100]

約数ペア:

[(1, 20198100), (2, 10099050), (3, 6732700), (4, 5049525), (5, 4039620), (6, 3366350), (10, 2019810), (12, 1683175), (13, 1553700), (15, 1346540), (20, 1009905), (25, 807924), (26, 776850), (30, 673270), (39, 517900), (50, 403962), (52, 388425), (60, 336635), (65, 310740), (75, 269308), (78, 258950), (100, 201981), (130, 155370), (150, 134654), (156, 129475), (195, 103580), (260, 77685), (300, 67327), (325, 62148), (390, 51790), (650, 31074), (780, 25895), (975, 20716), (1300, 15537), (1950, 10358), (3900, 5179)]