213886515

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{563}}^1$

素因数の和:664

約数の個数: 64

約数和(自身を含む): 381173760

約数和(自身を除く): 167287245

約数列:

[1, 3, 5, 15, 19, 31, 43, 57, 93, 95, 129, 155, 215, 285, 465, 563, 589, 645, 817, 1333, 1689, 1767, 2451, 2815, 2945, 3999, 4085, 6665, 8445, 8835, 10697, 12255, 17453, 19995, 24209, 25327, 32091, 52359, 53485, 72627, 75981, 87265, 121045, 126635, 160455, 261795, 331607, 363135, 379905, 459971, 750479, 994821, 1379913, 1658035, 2251437, 2299855, 3752395, 4974105, 6899565, 11257185, 14259101, 42777303, 71295505, 213886515]

約数ペア:

[(1, 213886515), (3, 71295505), (5, 42777303), (15, 14259101), (19, 11257185), (31, 6899565), (43, 4974105), (57, 3752395), (93, 2299855), (95, 2251437), (129, 1658035), (155, 1379913), (215, 994821), (285, 750479), (465, 459971), (563, 379905), (589, 363135), (645, 331607), (817, 261795), (1333, 160455), (1689, 126635), (1767, 121045), (2451, 87265), (2815, 75981), (2945, 72627), (3999, 53485), (4085, 52359), (6665, 32091), (8445, 25327), (8835, 24209), (10697, 19995), (12255, 17453)]