8709740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{241}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 19921440

約数和(自身を除く): 11211700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 139, 241, 260, 278, 482, 556, 695, 964, 1205, 1390, 1807, 2410, 2780, 3133, 3614, 4820, 6266, 7228, 9035, 12532, 15665, 18070, 31330, 33499, 36140, 62660, 66998, 133996, 167495, 334990, 435487, 669980, 870974, 1741948, 2177435, 4354870, 8709740]

約数ペア:

[(1, 8709740), (2, 4354870), (4, 2177435), (5, 1741948), (10, 870974), (13, 669980), (20, 435487), (26, 334990), (52, 167495), (65, 133996), (130, 66998), (139, 62660), (241, 36140), (260, 33499), (278, 31330), (482, 18070), (556, 15665), (695, 12532), (964, 9035), (1205, 7228), (1390, 6266), (1807, 4820), (2410, 3614), (2780, 3133)]