28691080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{331}}^1$

素因数の和:550

約数の個数: 64

約数和(自身を含む): 70994880

約数和(自身を除く): 42303800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 197, 220, 331, 394, 440, 662, 788, 985, 1324, 1576, 1655, 1970, 2167, 2648, 3310, 3641, 3940, 4334, 6620, 7282, 7880, 8668, 10835, 13240, 14564, 17336, 18205, 21670, 29128, 36410, 43340, 65207, 72820, 86680, 130414, 145640, 260828, 326035, 521656, 652070, 717277, 1304140, 1434554, 2608280, 2869108, 3586385, 5738216, 7172770, 14345540, 28691080]

約数ペア:

[(1, 28691080), (2, 14345540), (4, 7172770), (5, 5738216), (8, 3586385), (10, 2869108), (11, 2608280), (20, 1434554), (22, 1304140), (40, 717277), (44, 652070), (55, 521656), (88, 326035), (110, 260828), (197, 145640), (220, 130414), (331, 86680), (394, 72820), (440, 65207), (662, 43340), (788, 36410), (985, 29128), (1324, 21670), (1576, 18205), (1655, 17336), (1970, 14564), (2167, 13240), (2648, 10835), (3310, 8668), (3641, 7880), (3940, 7282), (4334, 6620)]