18783980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{547}}^1$

素因数の和:674

約数の個数: 48

約数和(自身を含む): 42257376

約数和(自身を除く): 23473396

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 101, 170, 202, 340, 404, 505, 547, 1010, 1094, 1717, 2020, 2188, 2735, 3434, 5470, 6868, 8585, 9299, 10940, 17170, 18598, 34340, 37196, 46495, 55247, 92990, 110494, 185980, 220988, 276235, 552470, 939199, 1104940, 1878398, 3756796, 4695995, 9391990, 18783980]

約数ペア:

[(1, 18783980), (2, 9391990), (4, 4695995), (5, 3756796), (10, 1878398), (17, 1104940), (20, 939199), (34, 552470), (68, 276235), (85, 220988), (101, 185980), (170, 110494), (202, 92990), (340, 55247), (404, 46495), (505, 37196), (547, 34340), (1010, 18598), (1094, 17170), (1717, 10940), (2020, 9299), (2188, 8585), (2735, 6868), (3434, 5470)]