1339960

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{241}}^1$

素因数の和:391

約数の個数: 32

約数和(自身を含む): 3049200

約数和(自身を除く): 1709240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 241, 278, 482, 556, 695, 964, 1112, 1205, 1390, 1928, 2410, 2780, 4820, 5560, 9640, 33499, 66998, 133996, 167495, 267992, 334990, 669980, 1339960]

約数ペア:

[(1, 1339960), (2, 669980), (4, 334990), (5, 267992), (8, 167495), (10, 133996), (20, 66998), (40, 33499), (139, 9640), (241, 5560), (278, 4820), (482, 2780), (556, 2410), (695, 1928), (964, 1390), (1112, 1205)]