18386992

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{811}}^1$

素因数の和:941

約数の個数: 40

約数和(自身を含む): 38764880

約数和(自身を除く): 20377888

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 109, 208, 218, 436, 811, 872, 1417, 1622, 1744, 2834, 3244, 5668, 6488, 10543, 11336, 12976, 21086, 22672, 42172, 84344, 88399, 168688, 176798, 353596, 707192, 1149187, 1414384, 2298374, 4596748, 9193496, 18386992]

約数ペア:

[(1, 18386992), (2, 9193496), (4, 4596748), (8, 2298374), (13, 1414384), (16, 1149187), (26, 707192), (52, 353596), (104, 176798), (109, 168688), (208, 88399), (218, 84344), (436, 42172), (811, 22672), (872, 21086), (1417, 12976), (1622, 11336), (1744, 10543), (2834, 6488), (3244, 5668)]