28987040

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{10657}}^1$

素因数の和:10689

約数の個数: 48

約数和(自身を含む): 72517032

約数和(自身を除く): 43529992

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 10657, 21314, 42628, 53285, 85256, 106570, 170512, 181169, 213140, 341024, 362338, 426280, 724676, 852560, 905845, 1449352, 1705120, 1811690, 2898704, 3623380, 5797408, 7246760, 14493520, 28987040]

約数ペア:

[(1, 28987040), (2, 14493520), (4, 7246760), (5, 5797408), (8, 3623380), (10, 2898704), (16, 1811690), (17, 1705120), (20, 1449352), (32, 905845), (34, 852560), (40, 724676), (68, 426280), (80, 362338), (85, 341024), (136, 213140), (160, 181169), (170, 170512), (272, 106570), (340, 85256), (544, 53285), (680, 42628), (1360, 21314), (2720, 10657)]