31804520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^2\times {\mathrm{43}}^1$

素因数の和:147

約数の個数: 96

約数和(自身を含む): 81876960

約数和(自身を除く): 50072440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 43, 44, 55, 82, 86, 88, 110, 164, 172, 205, 215, 220, 328, 344, 410, 430, 440, 451, 473, 820, 860, 902, 946, 1640, 1681, 1720, 1763, 1804, 1892, 2255, 2365, 3362, 3526, 3608, 3784, 4510, 4730, 6724, 7052, 8405, 8815, 9020, 9460, 13448, 14104, 16810, 17630, 18040, 18491, 18920, 19393, 33620, 35260, 36982, 38786, 67240, 70520, 72283, 73964, 77572, 92455, 96965, 144566, 147928, 155144, 184910, 193930, 289132, 361415, 369820, 387860, 578264, 722830, 739640, 775720, 795113, 1445660, 1590226, 2891320, 3180452, 3975565, 6360904, 7951130, 15902260, 31804520]

約数ペア:

[(1, 31804520), (2, 15902260), (4, 7951130), (5, 6360904), (8, 3975565), (10, 3180452), (11, 2891320), (20, 1590226), (22, 1445660), (40, 795113), (41, 775720), (43, 739640), (44, 722830), (55, 578264), (82, 387860), (86, 369820), (88, 361415), (110, 289132), (164, 193930), (172, 184910), (205, 155144), (215, 147928), (220, 144566), (328, 96965), (344, 92455), (410, 77572), (430, 73964), (440, 72283), (451, 70520), (473, 67240), (820, 38786), (860, 36982), (902, 35260), (946, 33620), (1640, 19393), (1681, 18920), (1720, 18491), (1763, 18040), (1804, 17630), (1892, 16810), (2255, 14104), (2365, 13448), (3362, 9460), (3526, 9020), (3608, 8815), (3784, 8405), (4510, 7052), (4730, 6724)]