20698020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16427}}^1$

素因数の和:16449

約数の個数: 72

約数和(自身を含む): 71757504

約数和(自身を除く): 51059484

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, 16427, 32854, 49281, 65708, 82135, 98562, 114989, 147843, 164270, 197124, 229978, 246405, 295686, 328540, 344967, 459956, 492810, 574945, 591372, 689934, 739215, 985620, 1034901, 1149890, 1379868, 1478430, 1724835, 2069802, 2299780, 2956860, 3449670, 4139604, 5174505, 6899340, 10349010, 20698020]

約数ペア:

[(1, 20698020), (2, 10349010), (3, 6899340), (4, 5174505), (5, 4139604), (6, 3449670), (7, 2956860), (9, 2299780), (10, 2069802), (12, 1724835), (14, 1478430), (15, 1379868), (18, 1149890), (20, 1034901), (21, 985620), (28, 739215), (30, 689934), (35, 591372), (36, 574945), (42, 492810), (45, 459956), (60, 344967), (63, 328540), (70, 295686), (84, 246405), (90, 229978), (105, 197124), (126, 164270), (140, 147843), (180, 114989), (210, 98562), (252, 82135), (315, 65708), (420, 49281), (630, 32854), (1260, 16427)]