20286280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{1367}}^1$

素因数の和:1438

約数の個数: 64

約数和(自身を含む): 53187840

約数和(自身を除く): 32901560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 53, 56, 70, 106, 140, 212, 265, 280, 371, 424, 530, 742, 1060, 1367, 1484, 1855, 2120, 2734, 2968, 3710, 5468, 6835, 7420, 9569, 10936, 13670, 14840, 19138, 27340, 38276, 47845, 54680, 72451, 76552, 95690, 144902, 191380, 289804, 362255, 382760, 507157, 579608, 724510, 1014314, 1449020, 2028628, 2535785, 2898040, 4057256, 5071570, 10143140, 20286280]

約数ペア:

[(1, 20286280), (2, 10143140), (4, 5071570), (5, 4057256), (7, 2898040), (8, 2535785), (10, 2028628), (14, 1449020), (20, 1014314), (28, 724510), (35, 579608), (40, 507157), (53, 382760), (56, 362255), (70, 289804), (106, 191380), (140, 144902), (212, 95690), (265, 76552), (280, 72451), (371, 54680), (424, 47845), (530, 38276), (742, 27340), (1060, 19138), (1367, 14840), (1484, 13670), (1855, 10936), (2120, 9569), (2734, 7420), (2968, 6835), (3710, 5468)]