27989650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{149}}^1$

素因数の和:208

約数の個数: 72

約数和(自身を含む): 59957100

約数和(自身を除く): 31967450

約数列:

[1, 2, 5, 10, 13, 17, 25, 26, 34, 50, 65, 85, 130, 149, 170, 221, 289, 298, 325, 425, 442, 578, 650, 745, 850, 1105, 1445, 1490, 1937, 2210, 2533, 2890, 3725, 3757, 3874, 5066, 5525, 7225, 7450, 7514, 9685, 11050, 12665, 14450, 18785, 19370, 25330, 32929, 37570, 43061, 48425, 63325, 65858, 86122, 93925, 96850, 126650, 164645, 187850, 215305, 329290, 430610, 559793, 823225, 1076525, 1119586, 1646450, 2153050, 2798965, 5597930, 13994825, 27989650]

約数ペア:

[(1, 27989650), (2, 13994825), (5, 5597930), (10, 2798965), (13, 2153050), (17, 1646450), (25, 1119586), (26, 1076525), (34, 823225), (50, 559793), (65, 430610), (85, 329290), (130, 215305), (149, 187850), (170, 164645), (221, 126650), (289, 96850), (298, 93925), (325, 86122), (425, 65858), (442, 63325), (578, 48425), (650, 43061), (745, 37570), (850, 32929), (1105, 25330), (1445, 19370), (1490, 18785), (1937, 14450), (2210, 12665), (2533, 11050), (2890, 9685), (3725, 7514), (3757, 7450), (3874, 7225), (5066, 5525)]