28129630

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1\times {\mathrm{197}}^1$

素因数の和:444

約数の個数: 32

約数和(自身を含む): 51749280

約数和(自身を除く): 23619650

約数列:

[1, 2, 5, 10, 109, 131, 197, 218, 262, 394, 545, 655, 985, 1090, 1310, 1970, 14279, 21473, 25807, 28558, 42946, 51614, 71395, 107365, 129035, 142790, 214730, 258070, 2812963, 5625926, 14064815, 28129630]

約数ペア:

[(1, 28129630), (2, 14064815), (5, 5625926), (10, 2812963), (109, 258070), (131, 214730), (197, 142790), (218, 129035), (262, 107365), (394, 71395), (545, 51614), (655, 42946), (985, 28558), (1090, 25807), (1310, 21473), (1970, 14279)]