20677860

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16411}}^1$

素因数の和:16433

約数の個数: 72

約数和(自身を含む): 71687616

約数和(自身を除く): 51009756

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16411, 32822, 49233, 65644, 82055, 98466, 114877, 147699, 164110, 196932, 229754, 246165, 295398, 328220, 344631, 459508, 492330, 574385, 590796, 689262, 738495, 984660, 1033893, 1148770, 1378524, 1476990, 1723155, 2067786, 2297540, 2953980, 3446310, 4135572, 5169465, 6892620, 10338930, 20677860]

約数ペア:

[(1, 20677860), (2, 10338930), (3, 6892620), (4, 5169465), (5, 4135572), (6, 3446310), (7, 2953980), (9, 2297540), (10, 2067786), (12, 1723155), (14, 1476990), (15, 1378524), (18, 1148770), (20, 1033893), (21, 984660), (28, 738495), (30, 689262), (35, 590796), (36, 574385), (42, 492330), (45, 459508), (60, 344631), (63, 328220), (70, 295398), (84, 246165), (90, 229754), (105, 196932), (126, 164110), (140, 147699), (180, 114877), (210, 98466), (252, 82055), (315, 65644), (420, 49233), (630, 32822), (1260, 16411)]