128528145

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{661}}^1$

素因数の和:850

約数の個数: 48

約数和(自身を含む): 232362000

約数和(自身を除く): 103833855

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 145, 149, 261, 435, 447, 661, 745, 1305, 1341, 1983, 2235, 3305, 4321, 5949, 6705, 9915, 12963, 19169, 21605, 29745, 38889, 57507, 64815, 95845, 98489, 172521, 194445, 287535, 295467, 492445, 862605, 886401, 1477335, 2856181, 4432005, 8568543, 14280905, 25705629, 42842715, 128528145]

約数ペア:

[(1, 128528145), (3, 42842715), (5, 25705629), (9, 14280905), (15, 8568543), (29, 4432005), (45, 2856181), (87, 1477335), (145, 886401), (149, 862605), (261, 492445), (435, 295467), (447, 287535), (661, 194445), (745, 172521), (1305, 98489), (1341, 95845), (1983, 64815), (2235, 57507), (3305, 38889), (4321, 29745), (5949, 21605), (6705, 19169), (9915, 12963)]