320821490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{617}}^1$

素因数の和:827

約数の個数: 64

約数和(自身を含む): 656760960

約数和(自身を除く): 335939470

約数列:

[1, 2, 5, 10, 11, 22, 29, 55, 58, 110, 145, 163, 290, 319, 326, 617, 638, 815, 1234, 1595, 1630, 1793, 3085, 3190, 3586, 4727, 6170, 6787, 8965, 9454, 13574, 17893, 17930, 23635, 33935, 35786, 47270, 51997, 67870, 89465, 100571, 103994, 178930, 196823, 201142, 259985, 393646, 502855, 519970, 984115, 1005710, 1106281, 1968230, 2212562, 2916559, 5531405, 5833118, 11062810, 14582795, 29165590, 32082149, 64164298, 160410745, 320821490]

約数ペア:

[(1, 320821490), (2, 160410745), (5, 64164298), (10, 32082149), (11, 29165590), (22, 14582795), (29, 11062810), (55, 5833118), (58, 5531405), (110, 2916559), (145, 2212562), (163, 1968230), (290, 1106281), (319, 1005710), (326, 984115), (617, 519970), (638, 502855), (815, 393646), (1234, 259985), (1595, 201142), (1630, 196823), (1793, 178930), (3085, 103994), (3190, 100571), (3586, 89465), (4727, 67870), (6170, 51997), (6787, 47270), (8965, 35786), (9454, 33935), (13574, 23635), (17893, 17930)]