20449130

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{487}}^1$

素因数の和:543

約数の個数: 64

約数和(自身を含む): 44271360

約数和(自身を除く): 23822230

約数列:

[1, 2, 5, 10, 13, 17, 19, 26, 34, 38, 65, 85, 95, 130, 170, 190, 221, 247, 323, 442, 487, 494, 646, 974, 1105, 1235, 1615, 2210, 2435, 2470, 3230, 4199, 4870, 6331, 8279, 8398, 9253, 12662, 16558, 18506, 20995, 31655, 41395, 41990, 46265, 63310, 82790, 92530, 107627, 120289, 157301, 215254, 240578, 314602, 538135, 601445, 786505, 1076270, 1202890, 1573010, 2044913, 4089826, 10224565, 20449130]

約数ペア:

[(1, 20449130), (2, 10224565), (5, 4089826), (10, 2044913), (13, 1573010), (17, 1202890), (19, 1076270), (26, 786505), (34, 601445), (38, 538135), (65, 314602), (85, 240578), (95, 215254), (130, 157301), (170, 120289), (190, 107627), (221, 92530), (247, 82790), (323, 63310), (442, 46265), (487, 41990), (494, 41395), (646, 31655), (974, 20995), (1105, 18506), (1235, 16558), (1615, 12662), (2210, 9253), (2435, 8398), (2470, 8279), (3230, 6331), (4199, 4870)]