18874458

素因数分解:

$2^1\times 3^4\times {\mathrm{263}}^1\times {\mathrm{443}}^1$

素因数の和:720

約数の個数: 40

約数和(自身を含む): 42549408

約数和(自身を除く): 23674950

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 263, 443, 526, 789, 886, 1329, 1578, 2367, 2658, 3987, 4734, 7101, 7974, 11961, 14202, 21303, 23922, 35883, 42606, 71766, 116509, 233018, 349527, 699054, 1048581, 2097162, 3145743, 6291486, 9437229, 18874458]

約数ペア:

[(1, 18874458), (2, 9437229), (3, 6291486), (6, 3145743), (9, 2097162), (18, 1048581), (27, 699054), (54, 349527), (81, 233018), (162, 116509), (263, 71766), (443, 42606), (526, 35883), (789, 23922), (886, 21303), (1329, 14202), (1578, 11961), (2367, 7974), (2658, 7101), (3987, 4734)]