30491660

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 65862720

約数和(自身を除く): 35371060

約数列:

[1, 2, 4, 5, 10, 20, 71, 109, 142, 197, 218, 284, 355, 394, 436, 545, 710, 788, 985, 1090, 1420, 1970, 2180, 3940, 7739, 13987, 15478, 21473, 27974, 30956, 38695, 42946, 55948, 69935, 77390, 85892, 107365, 139870, 154780, 214730, 279740, 429460, 1524583, 3049166, 6098332, 7622915, 15245830, 30491660]

約数ペア:

[(1, 30491660), (2, 15245830), (4, 7622915), (5, 6098332), (10, 3049166), (20, 1524583), (71, 429460), (109, 279740), (142, 214730), (197, 154780), (218, 139870), (284, 107365), (355, 85892), (394, 77390), (436, 69935), (545, 55948), (710, 42946), (788, 38695), (985, 30956), (1090, 27974), (1420, 21473), (1970, 15478), (2180, 13987), (3940, 7739)]