87660860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{8819}}^1$

素因数の和:8906

約数の個数: 48

約数和(自身を含む): 213373440

約数和(自身を除く): 125712580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 8819, 9940, 17638, 35276, 44095, 61733, 88190, 123466, 176380, 246932, 308665, 617330, 626149, 1234660, 1252298, 2504596, 3130745, 4383043, 6261490, 8766086, 12522980, 17532172, 21915215, 43830430, 87660860]

約数ペア:

[(1, 87660860), (2, 43830430), (4, 21915215), (5, 17532172), (7, 12522980), (10, 8766086), (14, 6261490), (20, 4383043), (28, 3130745), (35, 2504596), (70, 1252298), (71, 1234660), (140, 626149), (142, 617330), (284, 308665), (355, 246932), (497, 176380), (710, 123466), (994, 88190), (1420, 61733), (1988, 44095), (2485, 35276), (4970, 17638), (8819, 9940)]