18620420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{787}}^1$

素因数の和:829

約数の個数: 72

約数和(自身を含む): 48452544

約数和(自身を除く): 29832124

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 169, 182, 260, 338, 364, 455, 676, 787, 845, 910, 1183, 1574, 1690, 1820, 2366, 3148, 3380, 3935, 4732, 5509, 5915, 7870, 10231, 11018, 11830, 15740, 20462, 22036, 23660, 27545, 40924, 51155, 55090, 71617, 102310, 110180, 133003, 143234, 204620, 266006, 286468, 358085, 532012, 665015, 716170, 931021, 1330030, 1432340, 1862042, 2660060, 3724084, 4655105, 9310210, 18620420]

約数ペア:

[(1, 18620420), (2, 9310210), (4, 4655105), (5, 3724084), (7, 2660060), (10, 1862042), (13, 1432340), (14, 1330030), (20, 931021), (26, 716170), (28, 665015), (35, 532012), (52, 358085), (65, 286468), (70, 266006), (91, 204620), (130, 143234), (140, 133003), (169, 110180), (182, 102310), (260, 71617), (338, 55090), (364, 51155), (455, 40924), (676, 27545), (787, 23660), (845, 22036), (910, 20462), (1183, 15740), (1574, 11830), (1690, 11018), (1820, 10231), (2366, 7870), (3148, 5915), (3380, 5509), (3935, 4732)]