640888482

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{2087}}^1$

素因数の和:2263

約数の個数: 64

約数和(自身を含む): 1436811264

約数和(自身を除く): 795922782

約数列:

[1, 2, 3, 6, 13, 26, 31, 39, 62, 78, 93, 127, 186, 254, 381, 403, 762, 806, 1209, 1651, 2087, 2418, 3302, 3937, 4174, 4953, 6261, 7874, 9906, 11811, 12522, 23622, 27131, 51181, 54262, 64697, 81393, 102362, 129394, 153543, 162786, 194091, 265049, 307086, 388182, 530098, 795147, 841061, 1590294, 1682122, 2523183, 3445637, 5046366, 6891274, 8216519, 10336911, 16433038, 20673822, 24649557, 49299114, 106814747, 213629494, 320444241, 640888482]

約数ペア:

[(1, 640888482), (2, 320444241), (3, 213629494), (6, 106814747), (13, 49299114), (26, 24649557), (31, 20673822), (39, 16433038), (62, 10336911), (78, 8216519), (93, 6891274), (127, 5046366), (186, 3445637), (254, 2523183), (381, 1682122), (403, 1590294), (762, 841061), (806, 795147), (1209, 530098), (1651, 388182), (2087, 307086), (2418, 265049), (3302, 194091), (3937, 162786), (4174, 153543), (4953, 129394), (6261, 102362), (7874, 81393), (9906, 64697), (11811, 54262), (12522, 51181), (23622, 27131)]