20154820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7577}}^1$

素因数の和:7612

約数の個数: 48

約数和(自身を含む): 50924160

約数和(自身を除く): 30769340

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 7577, 15154, 30308, 37885, 53039, 75770, 106078, 143963, 151540, 212156, 265195, 287926, 530390, 575852, 719815, 1007741, 1060780, 1439630, 2015482, 2879260, 4030964, 5038705, 10077410, 20154820]

約数ペア:

[(1, 20154820), (2, 10077410), (4, 5038705), (5, 4030964), (7, 2879260), (10, 2015482), (14, 1439630), (19, 1060780), (20, 1007741), (28, 719815), (35, 575852), (38, 530390), (70, 287926), (76, 265195), (95, 212156), (133, 151540), (140, 143963), (190, 106078), (266, 75770), (380, 53039), (532, 37885), (665, 30308), (1330, 15154), (2660, 7577)]