81371784

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{260807}}^1$

素因数の和:260829

約数の個数: 32

約数和(自身を含む): 219078720

約数和(自身を除く): 137706936

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 260807, 521614, 782421, 1043228, 1564842, 2086456, 3129684, 3390491, 6259368, 6780982, 10171473, 13561964, 20342946, 27123928, 40685892, 81371784]

約数ペア:

[(1, 81371784), (2, 40685892), (3, 27123928), (4, 20342946), (6, 13561964), (8, 10171473), (12, 6780982), (13, 6259368), (24, 3390491), (26, 3129684), (39, 2086456), (52, 1564842), (78, 1043228), (104, 782421), (156, 521614), (312, 260807)]