1640771990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{88261}}^1$

素因数の和:88305

約数の個数: 48

約数和(自身を含む): 3488820336

約数和(自身を除く): 1848048346

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 143, 169, 286, 338, 715, 845, 1430, 1690, 1859, 3718, 9295, 18590, 88261, 176522, 441305, 882610, 970871, 1147393, 1941742, 2294786, 4854355, 5736965, 9708710, 11473930, 12621323, 14916109, 25242646, 29832218, 63106615, 74580545, 126213230, 149161090, 164077199, 328154398, 820385995, 1640771990]

約数ペア:

[(1, 1640771990), (2, 820385995), (5, 328154398), (10, 164077199), (11, 149161090), (13, 126213230), (22, 74580545), (26, 63106615), (55, 29832218), (65, 25242646), (110, 14916109), (130, 12621323), (143, 11473930), (169, 9708710), (286, 5736965), (338, 4854355), (715, 2294786), (845, 1941742), (1430, 1147393), (1690, 970871), (1859, 882610), (3718, 441305), (9295, 176522), (18590, 88261)]