28472840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{397}}^1$

素因数の和:582

約数の個数: 64

約数和(自身を含む): 70493760

約数和(自身を除く): 42020920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 163, 220, 326, 397, 440, 652, 794, 815, 1304, 1588, 1630, 1793, 1985, 3176, 3260, 3586, 3970, 4367, 6520, 7172, 7940, 8734, 8965, 14344, 15880, 17468, 17930, 21835, 34936, 35860, 43670, 64711, 71720, 87340, 129422, 174680, 258844, 323555, 517688, 647110, 711821, 1294220, 1423642, 2588440, 2847284, 3559105, 5694568, 7118210, 14236420, 28472840]

約数ペア:

[(1, 28472840), (2, 14236420), (4, 7118210), (5, 5694568), (8, 3559105), (10, 2847284), (11, 2588440), (20, 1423642), (22, 1294220), (40, 711821), (44, 647110), (55, 517688), (88, 323555), (110, 258844), (163, 174680), (220, 129422), (326, 87340), (397, 71720), (440, 64711), (652, 43670), (794, 35860), (815, 34936), (1304, 21835), (1588, 17930), (1630, 17468), (1793, 15880), (1985, 14344), (3176, 8965), (3260, 8734), (3586, 7940), (3970, 7172), (4367, 6520)]