18876760

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{9631}}^1$

素因数の和:9656

約数の個数: 48

約数和(自身を含む): 49412160

約数和(自身を除く): 30535400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 9631, 19262, 38524, 48155, 67417, 77048, 96310, 134834, 192620, 269668, 337085, 385240, 471919, 539336, 674170, 943838, 1348340, 1887676, 2359595, 2696680, 3775352, 4719190, 9438380, 18876760]

約数ペア:

[(1, 18876760), (2, 9438380), (4, 4719190), (5, 3775352), (7, 2696680), (8, 2359595), (10, 1887676), (14, 1348340), (20, 943838), (28, 674170), (35, 539336), (40, 471919), (49, 385240), (56, 337085), (70, 269668), (98, 192620), (140, 134834), (196, 96310), (245, 77048), (280, 67417), (392, 48155), (490, 38524), (980, 19262), (1960, 9631)]