19946920

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10177}}^1$

素因数の和:10202

約数の個数: 48

約数和(自身を含む): 52213140

約数和(自身を除く): 32266220

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, 10177, 20354, 40708, 50885, 71239, 81416, 101770, 142478, 203540, 284956, 356195, 407080, 498673, 569912, 712390, 997346, 1424780, 1994692, 2493365, 2849560, 3989384, 4986730, 9973460, 19946920]

約数ペア:

[(1, 19946920), (2, 9973460), (4, 4986730), (5, 3989384), (7, 2849560), (8, 2493365), (10, 1994692), (14, 1424780), (20, 997346), (28, 712390), (35, 569912), (40, 498673), (49, 407080), (56, 356195), (70, 284956), (98, 203540), (140, 142478), (196, 101770), (245, 81416), (280, 71239), (392, 50885), (490, 40708), (980, 20354), (1960, 10177)]