18700838

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{331}}^1$

素因数の和:440

約数の個数: 32

約数和(自身を含む): 31624992

約数和(自身を除く): 12924154

約数列:

[1, 2, 13, 26, 41, 53, 82, 106, 331, 533, 662, 689, 1066, 1378, 2173, 4303, 4346, 8606, 13571, 17543, 27142, 28249, 35086, 56498, 176423, 228059, 352846, 456118, 719263, 1438526, 9350419, 18700838]

約数ペア:

[(1, 18700838), (2, 9350419), (13, 1438526), (26, 719263), (41, 456118), (53, 352846), (82, 228059), (106, 176423), (331, 56498), (533, 35086), (662, 28249), (689, 27142), (1066, 17543), (1378, 13571), (2173, 8606), (4303, 4346)]