2780453540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1\times {\mathrm{997}}^1$

素因数の和:1245

約数の個数: 96

約数和(自身を含む): 6337699200

約数和(自身を除く): 3557245660

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 164, 179, 190, 205, 358, 380, 410, 716, 779, 820, 895, 997, 1558, 1790, 1994, 3116, 3401, 3580, 3895, 3988, 4985, 6802, 7339, 7790, 9970, 13604, 14678, 15580, 17005, 18943, 19940, 29356, 34010, 36695, 37886, 40877, 68020, 73390, 75772, 81754, 94715, 139441, 146780, 163508, 178463, 189430, 204385, 278882, 356926, 378860, 408770, 557764, 697205, 713852, 776663, 817540, 892315, 1394410, 1553326, 1784630, 2788820, 3106652, 3390797, 3569260, 3883315, 6781594, 7316983, 7766630, 13563188, 14633966, 15533260, 16953985, 29267932, 33907970, 36584915, 67815940, 73169830, 139022677, 146339660, 278045354, 556090708, 695113385, 1390226770, 2780453540]

約数ペア:

[(1, 2780453540), (2, 1390226770), (4, 695113385), (5, 556090708), (10, 278045354), (19, 146339660), (20, 139022677), (38, 73169830), (41, 67815940), (76, 36584915), (82, 33907970), (95, 29267932), (164, 16953985), (179, 15533260), (190, 14633966), (205, 13563188), (358, 7766630), (380, 7316983), (410, 6781594), (716, 3883315), (779, 3569260), (820, 3390797), (895, 3106652), (997, 2788820), (1558, 1784630), (1790, 1553326), (1994, 1394410), (3116, 892315), (3401, 817540), (3580, 776663), (3895, 713852), (3988, 697205), (4985, 557764), (6802, 408770), (7339, 378860), (7790, 356926), (9970, 278882), (13604, 204385), (14678, 189430), (15580, 178463), (17005, 163508), (18943, 146780), (19940, 139441), (29356, 94715), (34010, 81754), (36695, 75772), (37886, 73390), (40877, 68020)]