20645460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10427}}^1$

素因数の和:10453

約数の個数: 72

約数和(自身を含む): 68324256

約数和(自身を除く): 47678796

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 10427, 20854, 31281, 41708, 52135, 62562, 93843, 104270, 114697, 125124, 156405, 187686, 208540, 229394, 312810, 344091, 375372, 458788, 469215, 573485, 625620, 688182, 938430, 1032273, 1146970, 1376364, 1720455, 1876860, 2064546, 2293940, 3440910, 4129092, 5161365, 6881820, 10322730, 20645460]

約数ペア:

[(1, 20645460), (2, 10322730), (3, 6881820), (4, 5161365), (5, 4129092), (6, 3440910), (9, 2293940), (10, 2064546), (11, 1876860), (12, 1720455), (15, 1376364), (18, 1146970), (20, 1032273), (22, 938430), (30, 688182), (33, 625620), (36, 573485), (44, 469215), (45, 458788), (55, 375372), (60, 344091), (66, 312810), (90, 229394), (99, 208540), (110, 187686), (132, 156405), (165, 125124), (180, 114697), (198, 104270), (220, 93843), (330, 62562), (396, 52135), (495, 41708), (660, 31281), (990, 20854), (1980, 10427)]