408026320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{392333}}^1$

素因数の和:392359

約数の個数: 40

約数和(自身を含む): 1021637736

約数和(自身を除く): 613611416

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 392333, 784666, 1569332, 1961665, 3138664, 3923330, 5100329, 6277328, 7846660, 10200658, 15693320, 20401316, 25501645, 31386640, 40802632, 51003290, 81605264, 102006580, 204013160, 408026320]

約数ペア:

[(1, 408026320), (2, 204013160), (4, 102006580), (5, 81605264), (8, 51003290), (10, 40802632), (13, 31386640), (16, 25501645), (20, 20401316), (26, 15693320), (40, 10200658), (52, 7846660), (65, 6277328), (80, 5100329), (104, 3923330), (130, 3138664), (208, 1961665), (260, 1569332), (520, 784666), (1040, 392333)]