15405940

素因数分解:

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

素因数の和:552

約数の個数: 48

約数和(自身を含む): 35562240

約数和(自身を除く): 20156300

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 239, 293, 478, 586, 956, 1172, 1195, 1465, 2390, 2629, 2930, 3223, 4780, 5258, 5860, 6446, 10516, 12892, 13145, 16115, 26290, 32230, 52580, 64460, 70027, 140054, 280108, 350135, 700270, 770297, 1400540, 1540594, 3081188, 3851485, 7702970, 15405940]

約数ペア:

[(1, 15405940), (2, 7702970), (4, 3851485), (5, 3081188), (10, 1540594), (11, 1400540), (20, 770297), (22, 700270), (44, 350135), (55, 280108), (110, 140054), (220, 70027), (239, 64460), (293, 52580), (478, 32230), (586, 26290), (956, 16115), (1172, 13145), (1195, 12892), (1465, 10516), (2390, 6446), (2629, 5860), (2930, 5258), (3223, 4780)]