257258950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{4447}}^1$

素因数の和:4561

約数の個数: 48

約数和(自身を含む): 521216640

約数和(自身を除く): 263957690

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 89, 130, 178, 325, 445, 650, 890, 1157, 2225, 2314, 4447, 4450, 5785, 8894, 11570, 22235, 28925, 44470, 57811, 57850, 111175, 115622, 222350, 289055, 395783, 578110, 791566, 1445275, 1978915, 2890550, 3957830, 5145179, 9894575, 10290358, 19789150, 25725895, 51451790, 128629475, 257258950]

約数ペア:

[(1, 257258950), (2, 128629475), (5, 51451790), (10, 25725895), (13, 19789150), (25, 10290358), (26, 9894575), (50, 5145179), (65, 3957830), (89, 2890550), (130, 1978915), (178, 1445275), (325, 791566), (445, 578110), (650, 395783), (890, 289055), (1157, 222350), (2225, 115622), (2314, 111175), (4447, 57850), (4450, 57811), (5785, 44470), (8894, 28925), (11570, 22235)]