30811880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{293}}^1$

素因数の和:554

約数の個数: 64

約数和(自身を含む): 76204800

約数和(自身を除く): 45392920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 239, 293, 440, 478, 586, 956, 1172, 1195, 1465, 1912, 2344, 2390, 2629, 2930, 3223, 4780, 5258, 5860, 6446, 9560, 10516, 11720, 12892, 13145, 16115, 21032, 25784, 26290, 32230, 52580, 64460, 70027, 105160, 128920, 140054, 280108, 350135, 560216, 700270, 770297, 1400540, 1540594, 2801080, 3081188, 3851485, 6162376, 7702970, 15405940, 30811880]

約数ペア:

[(1, 30811880), (2, 15405940), (4, 7702970), (5, 6162376), (8, 3851485), (10, 3081188), (11, 2801080), (20, 1540594), (22, 1400540), (40, 770297), (44, 700270), (55, 560216), (88, 350135), (110, 280108), (220, 140054), (239, 128920), (293, 105160), (440, 70027), (478, 64460), (586, 52580), (956, 32230), (1172, 26290), (1195, 25784), (1465, 21032), (1912, 16115), (2344, 13145), (2390, 12892), (2629, 11720), (2930, 10516), (3223, 9560), (4780, 6446), (5258, 5860)]