19860880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^3\times {\mathrm{113}}^1$

素因数の和:165

約数の個数: 80

約数和(自身を含む): 50465520

約数和(自身を除く): 30604640

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 113, 130, 169, 208, 226, 260, 338, 452, 520, 565, 676, 845, 904, 1040, 1130, 1352, 1469, 1690, 1808, 2197, 2260, 2704, 2938, 3380, 4394, 4520, 5876, 6760, 7345, 8788, 9040, 10985, 11752, 13520, 14690, 17576, 19097, 21970, 23504, 29380, 35152, 38194, 43940, 58760, 76388, 87880, 95485, 117520, 152776, 175760, 190970, 248261, 305552, 381940, 496522, 763880, 993044, 1241305, 1527760, 1986088, 2482610, 3972176, 4965220, 9930440, 19860880]

約数ペア:

[(1, 19860880), (2, 9930440), (4, 4965220), (5, 3972176), (8, 2482610), (10, 1986088), (13, 1527760), (16, 1241305), (20, 993044), (26, 763880), (40, 496522), (52, 381940), (65, 305552), (80, 248261), (104, 190970), (113, 175760), (130, 152776), (169, 117520), (208, 95485), (226, 87880), (260, 76388), (338, 58760), (452, 43940), (520, 38194), (565, 35152), (676, 29380), (845, 23504), (904, 21970), (1040, 19097), (1130, 17576), (1352, 14690), (1469, 13520), (1690, 11752), (1808, 10985), (2197, 9040), (2260, 8788), (2704, 7345), (2938, 6760), (3380, 5876), (4394, 4520)]