18762220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{397}}^1$

素因数の和:562

約数の個数: 48

約数和(自身を含む): 42124320

約数和(自身を除く): 23362100

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 139, 170, 278, 340, 397, 556, 695, 794, 1390, 1588, 1985, 2363, 2780, 3970, 4726, 6749, 7940, 9452, 11815, 13498, 23630, 26996, 33745, 47260, 55183, 67490, 110366, 134980, 220732, 275915, 551830, 938111, 1103660, 1876222, 3752444, 4690555, 9381110, 18762220]

約数ペア:

[(1, 18762220), (2, 9381110), (4, 4690555), (5, 3752444), (10, 1876222), (17, 1103660), (20, 938111), (34, 551830), (68, 275915), (85, 220732), (139, 134980), (170, 110366), (278, 67490), (340, 55183), (397, 47260), (556, 33745), (695, 26996), (794, 23630), (1390, 13498), (1588, 11815), (1985, 9452), (2363, 7940), (2780, 6749), (3970, 4726)]