19912100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{53}}^1$

素因数の和:114

約数の個数: 108

約数和(自身を含む): 50363964

約数和(自身を除く): 30451864

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 25, 26, 34, 50, 52, 53, 65, 68, 85, 100, 106, 130, 170, 212, 221, 260, 265, 289, 325, 340, 425, 442, 530, 578, 650, 689, 850, 884, 901, 1060, 1105, 1156, 1300, 1325, 1378, 1445, 1700, 1802, 2210, 2650, 2756, 2890, 3445, 3604, 3757, 4420, 4505, 5300, 5525, 5780, 6890, 7225, 7514, 9010, 11050, 11713, 13780, 14450, 15028, 15317, 17225, 18020, 18785, 22100, 22525, 23426, 28900, 30634, 34450, 37570, 45050, 46852, 58565, 61268, 68900, 75140, 76585, 90100, 93925, 117130, 153170, 187850, 199121, 234260, 292825, 306340, 375700, 382925, 398242, 585650, 765850, 796484, 995605, 1171300, 1531700, 1991210, 3982420, 4978025, 9956050, 19912100]

約数ペア:

[(1, 19912100), (2, 9956050), (4, 4978025), (5, 3982420), (10, 1991210), (13, 1531700), (17, 1171300), (20, 995605), (25, 796484), (26, 765850), (34, 585650), (50, 398242), (52, 382925), (53, 375700), (65, 306340), (68, 292825), (85, 234260), (100, 199121), (106, 187850), (130, 153170), (170, 117130), (212, 93925), (221, 90100), (260, 76585), (265, 75140), (289, 68900), (325, 61268), (340, 58565), (425, 46852), (442, 45050), (530, 37570), (578, 34450), (650, 30634), (689, 28900), (850, 23426), (884, 22525), (901, 22100), (1060, 18785), (1105, 18020), (1156, 17225), (1300, 15317), (1325, 15028), (1378, 14450), (1445, 13780), (1700, 11713), (1802, 11050), (2210, 9010), (2650, 7514), (2756, 7225), (2890, 6890), (3445, 5780), (3604, 5525), (3757, 5300), (4420, 4505)]