20566544

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{307}}^1$

素因数の和:447

約数の個数: 40

約数和(自身を含む): 41247360

約数和(自身を除く): 20680816

約数列:

[1, 2, 4, 8, 16, 53, 79, 106, 158, 212, 307, 316, 424, 614, 632, 848, 1228, 1264, 2456, 4187, 4912, 8374, 16271, 16748, 24253, 32542, 33496, 48506, 65084, 66992, 97012, 130168, 194024, 260336, 388048, 1285409, 2570818, 5141636, 10283272, 20566544]

約数ペア:

[(1, 20566544), (2, 10283272), (4, 5141636), (8, 2570818), (16, 1285409), (53, 388048), (79, 260336), (106, 194024), (158, 130168), (212, 97012), (307, 66992), (316, 65084), (424, 48506), (614, 33496), (632, 32542), (848, 24253), (1228, 16748), (1264, 16271), (2456, 8374), (4187, 4912)]