90837890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{457}}^1$

素因数の和:627

約数の個数: 64

約数和(自身を含む): 193898880

約数和(自身を除く): 103060990

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 139, 143, 278, 286, 457, 695, 715, 914, 1390, 1430, 1529, 1807, 2285, 3058, 3614, 4570, 5027, 5941, 7645, 9035, 10054, 11882, 15290, 18070, 19877, 25135, 29705, 39754, 50270, 59410, 63523, 65351, 99385, 127046, 130702, 198770, 317615, 326755, 635230, 653510, 698753, 825799, 1397506, 1651598, 3493765, 4128995, 6987530, 8257990, 9083789, 18167578, 45418945, 90837890]

約数ペア:

[(1, 90837890), (2, 45418945), (5, 18167578), (10, 9083789), (11, 8257990), (13, 6987530), (22, 4128995), (26, 3493765), (55, 1651598), (65, 1397506), (110, 825799), (130, 698753), (139, 653510), (143, 635230), (278, 326755), (286, 317615), (457, 198770), (695, 130702), (715, 127046), (914, 99385), (1390, 65351), (1430, 63523), (1529, 59410), (1807, 50270), (2285, 39754), (3058, 29705), (3614, 25135), (4570, 19877), (5027, 18070), (5941, 15290), (7645, 11882), (9035, 10054)]