90290590

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{4261}}^1$

素因数の和:4444

約数の個数: 32

約数和(自身を含む): 176139936

約数和(自身を除く): 85849346

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 163, 326, 815, 1630, 2119, 4238, 4261, 8522, 10595, 21190, 21305, 42610, 55393, 110786, 276965, 553930, 694543, 1389086, 3472715, 6945430, 9029059, 18058118, 45145295, 90290590]

約数ペア:

[(1, 90290590), (2, 45145295), (5, 18058118), (10, 9029059), (13, 6945430), (26, 3472715), (65, 1389086), (130, 694543), (163, 553930), (326, 276965), (815, 110786), (1630, 55393), (2119, 42610), (4238, 21305), (4261, 21190), (8522, 10595)]