639472455

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^2\times {\mathrm{67}}^1$

素因数の和:222

約数の個数: 96

約数和(自身を含む): 1234771200

約数和(自身を除く): 595298745

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 61, 67, 95, 135, 171, 183, 201, 285, 305, 335, 513, 549, 603, 855, 915, 1005, 1159, 1273, 1647, 1809, 2565, 2745, 3015, 3477, 3721, 3819, 4087, 5795, 6365, 8235, 9045, 10431, 11163, 11457, 12261, 17385, 18605, 19095, 20435, 31293, 33489, 34371, 36783, 52155, 55815, 57285, 61305, 70699, 77653, 100467, 110349, 156465, 167445, 171855, 183915, 212097, 232959, 249307, 353495, 388265, 502335, 551745, 636291, 698877, 747921, 1060485, 1164795, 1246535, 1908873, 2096631, 2243763, 3181455, 3494385, 3739605, 4736833, 6731289, 9544365, 10483155, 11218815, 14210499, 23684165, 33656445, 42631497, 71052495, 127894491, 213157485, 639472455]

約数ペア:

[(1, 639472455), (3, 213157485), (5, 127894491), (9, 71052495), (15, 42631497), (19, 33656445), (27, 23684165), (45, 14210499), (57, 11218815), (61, 10483155), (67, 9544365), (95, 6731289), (135, 4736833), (171, 3739605), (183, 3494385), (201, 3181455), (285, 2243763), (305, 2096631), (335, 1908873), (513, 1246535), (549, 1164795), (603, 1060485), (855, 747921), (915, 698877), (1005, 636291), (1159, 551745), (1273, 502335), (1647, 388265), (1809, 353495), (2565, 249307), (2745, 232959), (3015, 212097), (3477, 183915), (3721, 171855), (3819, 167445), (4087, 156465), (5795, 110349), (6365, 100467), (8235, 77653), (9045, 70699), (10431, 61305), (11163, 57285), (11457, 55815), (12261, 52155), (17385, 36783), (18605, 34371), (19095, 33489), (20435, 31293)]