19945160

素因数分解:

$2^3\times 5^1\times {\mathrm{241}}^1\times {\mathrm{2069}}^1$

素因数の和:2321

約数の個数: 32

約数和(自身を含む): 45084600

約数和(自身を除く): 25139440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 241, 482, 964, 1205, 1928, 2069, 2410, 4138, 4820, 8276, 9640, 10345, 16552, 20690, 41380, 82760, 498629, 997258, 1994516, 2493145, 3989032, 4986290, 9972580, 19945160]

約数ペア:

[(1, 19945160), (2, 9972580), (4, 4986290), (5, 3989032), (8, 2493145), (10, 1994516), (20, 997258), (40, 498629), (241, 82760), (482, 41380), (964, 20690), (1205, 16552), (1928, 10345), (2069, 9640), (2410, 8276), (4138, 4820)]