491278340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{991}}^1\times {\mathrm{3541}}^1$

素因数の和:4548

約数の個数: 48

約数和(自身を含む): 1180591104

約数和(自身を除く): 689312764

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 991, 1982, 3541, 3964, 4955, 6937, 7082, 9910, 13874, 14164, 17705, 19820, 24787, 27748, 34685, 35410, 49574, 69370, 70820, 99148, 123935, 138740, 247870, 495740, 3509131, 7018262, 14036524, 17545655, 24563917, 35091310, 49127834, 70182620, 98255668, 122819585, 245639170, 491278340]

約数ペア:

[(1, 491278340), (2, 245639170), (4, 122819585), (5, 98255668), (7, 70182620), (10, 49127834), (14, 35091310), (20, 24563917), (28, 17545655), (35, 14036524), (70, 7018262), (140, 3509131), (991, 495740), (1982, 247870), (3541, 138740), (3964, 123935), (4955, 99148), (6937, 70820), (7082, 69370), (9910, 49574), (13874, 35410), (14164, 34685), (17705, 27748), (19820, 24787)]