640485720

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{254161}}^1$

素因数の和:254185

約数の個数: 96

約数和(自身を含む): 2378956320

約数和(自身を除く): 1738470600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 280, 315, 360, 420, 504, 630, 840, 1260, 2520, 254161, 508322, 762483, 1016644, 1270805, 1524966, 1779127, 2033288, 2287449, 2541610, 3049932, 3558254, 3812415, 4574898, 5083220, 5337381, 6099864, 7116508, 7624830, 8895635, 9149796, 10166440, 10674762, 11437245, 14233016, 15249660, 16012143, 17791270, 18299592, 21349524, 22874490, 26686905, 30499320, 32024286, 35582540, 42699048, 45748980, 53373810, 64048572, 71165080, 80060715, 91497960, 106747620, 128097144, 160121430, 213495240, 320242860, 640485720]

約数ペア:

[(1, 640485720), (2, 320242860), (3, 213495240), (4, 160121430), (5, 128097144), (6, 106747620), (7, 91497960), (8, 80060715), (9, 71165080), (10, 64048572), (12, 53373810), (14, 45748980), (15, 42699048), (18, 35582540), (20, 32024286), (21, 30499320), (24, 26686905), (28, 22874490), (30, 21349524), (35, 18299592), (36, 17791270), (40, 16012143), (42, 15249660), (45, 14233016), (56, 11437245), (60, 10674762), (63, 10166440), (70, 9149796), (72, 8895635), (84, 7624830), (90, 7116508), (105, 6099864), (120, 5337381), (126, 5083220), (140, 4574898), (168, 3812415), (180, 3558254), (210, 3049932), (252, 2541610), (280, 2287449), (315, 2033288), (360, 1779127), (420, 1524966), (504, 1270805), (630, 1016644), (840, 762483), (1260, 508322), (2520, 254161)]