18571980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{6317}}^1$

素因数の和:6343

約数の個数: 72

約数和(自身を含む): 60501168

約数和(自身を除く): 41929188

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 6317, 12634, 18951, 25268, 31585, 37902, 44219, 63170, 75804, 88438, 94755, 126340, 132657, 176876, 189510, 221095, 265314, 309533, 379020, 442190, 530628, 619066, 663285, 884380, 928599, 1238132, 1326570, 1547665, 1857198, 2653140, 3095330, 3714396, 4642995, 6190660, 9285990, 18571980]

約数ペア:

[(1, 18571980), (2, 9285990), (3, 6190660), (4, 4642995), (5, 3714396), (6, 3095330), (7, 2653140), (10, 1857198), (12, 1547665), (14, 1326570), (15, 1238132), (20, 928599), (21, 884380), (28, 663285), (30, 619066), (35, 530628), (42, 442190), (49, 379020), (60, 309533), (70, 265314), (84, 221095), (98, 189510), (105, 176876), (140, 132657), (147, 126340), (196, 94755), (210, 88438), (245, 75804), (294, 63170), (420, 44219), (490, 37902), (588, 31585), (735, 25268), (980, 18951), (1470, 12634), (2940, 6317)]