20856060

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1063}}^1$

素因数の和:1187

約数の個数: 72

約数和(自身を含む): 63903840

約数和(自身を除く): 43047780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 109, 180, 218, 327, 436, 545, 654, 981, 1063, 1090, 1308, 1635, 1962, 2126, 2180, 3189, 3270, 3924, 4252, 4905, 5315, 6378, 6540, 9567, 9810, 10630, 12756, 15945, 19134, 19620, 21260, 31890, 38268, 47835, 63780, 95670, 115867, 191340, 231734, 347601, 463468, 579335, 695202, 1042803, 1158670, 1390404, 1738005, 2085606, 2317340, 3476010, 4171212, 5214015, 6952020, 10428030, 20856060]

約数ペア:

[(1, 20856060), (2, 10428030), (3, 6952020), (4, 5214015), (5, 4171212), (6, 3476010), (9, 2317340), (10, 2085606), (12, 1738005), (15, 1390404), (18, 1158670), (20, 1042803), (30, 695202), (36, 579335), (45, 463468), (60, 347601), (90, 231734), (109, 191340), (180, 115867), (218, 95670), (327, 63780), (436, 47835), (545, 38268), (654, 31890), (981, 21260), (1063, 19620), (1090, 19134), (1308, 15945), (1635, 12756), (1962, 10630), (2126, 9810), (2180, 9567), (3189, 6540), (3270, 6378), (3924, 5315), (4252, 4905)]