16905820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2617}}^1$

素因数の和:2662

約数の個数: 48

約数和(自身を含む): 39584160

約数和(自身を除く): 22678340

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 323, 340, 380, 646, 1292, 1615, 2617, 3230, 5234, 6460, 10468, 13085, 26170, 44489, 49723, 52340, 88978, 99446, 177956, 198892, 222445, 248615, 444890, 497230, 845291, 889780, 994460, 1690582, 3381164, 4226455, 8452910, 16905820]

約数ペア:

[(1, 16905820), (2, 8452910), (4, 4226455), (5, 3381164), (10, 1690582), (17, 994460), (19, 889780), (20, 845291), (34, 497230), (38, 444890), (68, 248615), (76, 222445), (85, 198892), (95, 177956), (170, 99446), (190, 88978), (323, 52340), (340, 49723), (380, 44489), (646, 26170), (1292, 13085), (1615, 10468), (2617, 6460), (3230, 5234)]