20502222

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:249

約数の個数: 64

約数和(自身を含む): 46663680

約数和(自身を除く): 26161458

約数列:

[1, 2, 3, 6, 13, 26, 31, 39, 61, 62, 78, 93, 122, 139, 183, 186, 278, 366, 403, 417, 793, 806, 834, 1209, 1586, 1807, 1891, 2379, 2418, 3614, 3782, 4309, 4758, 5421, 5673, 8479, 8618, 10842, 11346, 12927, 16958, 24583, 25437, 25854, 49166, 50874, 56017, 73749, 110227, 112034, 147498, 168051, 220454, 262849, 330681, 336102, 525698, 661362, 788547, 1577094, 3417037, 6834074, 10251111, 20502222]

約数ペア:

[(1, 20502222), (2, 10251111), (3, 6834074), (6, 3417037), (13, 1577094), (26, 788547), (31, 661362), (39, 525698), (61, 336102), (62, 330681), (78, 262849), (93, 220454), (122, 168051), (139, 147498), (183, 112034), (186, 110227), (278, 73749), (366, 56017), (403, 50874), (417, 49166), (793, 25854), (806, 25437), (834, 24583), (1209, 16958), (1586, 12927), (1807, 11346), (1891, 10842), (2379, 8618), (2418, 8479), (3614, 5673), (3782, 5421), (4309, 4758)]