21969080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2531}}^1$

素因数の和:2580

約数の個数: 64

約数和(自身を含む): 58337280

約数和(自身を除く): 36368200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 2531, 4340, 5062, 8680, 10124, 12655, 17717, 20248, 25310, 35434, 50620, 70868, 78461, 88585, 101240, 141736, 156922, 177170, 313844, 354340, 392305, 549227, 627688, 708680, 784610, 1098454, 1569220, 2196908, 2746135, 3138440, 4393816, 5492270, 10984540, 21969080]

約数ペア:

[(1, 21969080), (2, 10984540), (4, 5492270), (5, 4393816), (7, 3138440), (8, 2746135), (10, 2196908), (14, 1569220), (20, 1098454), (28, 784610), (31, 708680), (35, 627688), (40, 549227), (56, 392305), (62, 354340), (70, 313844), (124, 177170), (140, 156922), (155, 141736), (217, 101240), (248, 88585), (280, 78461), (310, 70868), (434, 50620), (620, 35434), (868, 25310), (1085, 20248), (1240, 17717), (1736, 12655), (2170, 10124), (2531, 8680), (4340, 5062)]