20691468

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1747}}^1$

素因数の和:1811

約数の個数: 72

約数和(自身を含む): 61082112

約数和(自身を除く): 40390644

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 47, 63, 84, 94, 126, 141, 188, 252, 282, 329, 423, 564, 658, 846, 987, 1316, 1692, 1747, 1974, 2961, 3494, 3948, 5241, 5922, 6988, 10482, 11844, 12229, 15723, 20964, 24458, 31446, 36687, 48916, 62892, 73374, 82109, 110061, 146748, 164218, 220122, 246327, 328436, 440244, 492654, 574763, 738981, 985308, 1149526, 1477962, 1724289, 2299052, 2955924, 3448578, 5172867, 6897156, 10345734, 20691468]

約数ペア:

[(1, 20691468), (2, 10345734), (3, 6897156), (4, 5172867), (6, 3448578), (7, 2955924), (9, 2299052), (12, 1724289), (14, 1477962), (18, 1149526), (21, 985308), (28, 738981), (36, 574763), (42, 492654), (47, 440244), (63, 328436), (84, 246327), (94, 220122), (126, 164218), (141, 146748), (188, 110061), (252, 82109), (282, 73374), (329, 62892), (423, 48916), (564, 36687), (658, 31446), (846, 24458), (987, 20964), (1316, 15723), (1692, 12229), (1747, 11844), (1974, 10482), (2961, 6988), (3494, 5922), (3948, 5241)]