87767380

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1\times {\mathrm{241}}^1$

素因数の和:520

約数の個数: 48

約数和(自身を含む): 187830720

約数和(自身を除く): 100063340

約数列:

[1, 2, 4, 5, 10, 20, 131, 139, 241, 262, 278, 482, 524, 556, 655, 695, 964, 1205, 1310, 1390, 2410, 2620, 2780, 4820, 18209, 31571, 33499, 36418, 63142, 66998, 72836, 91045, 126284, 133996, 157855, 167495, 182090, 315710, 334990, 364180, 631420, 669980, 4388369, 8776738, 17553476, 21941845, 43883690, 87767380]

約数ペア:

[(1, 87767380), (2, 43883690), (4, 21941845), (5, 17553476), (10, 8776738), (20, 4388369), (131, 669980), (139, 631420), (241, 364180), (262, 334990), (278, 315710), (482, 182090), (524, 167495), (556, 157855), (655, 133996), (695, 126284), (964, 91045), (1205, 72836), (1310, 66998), (1390, 63142), (2410, 36418), (2620, 33499), (2780, 31571), (4820, 18209)]