18199960

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{7459}}^1$

素因数の和:7531

約数の個数: 32

約数和(自身を含む): 41626800

約数和(自身を除く): 23426840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 7459, 14918, 29836, 37295, 59672, 74590, 149180, 298360, 454999, 909998, 1819996, 2274995, 3639992, 4549990, 9099980, 18199960]

約数ペア:

[(1, 18199960), (2, 9099980), (4, 4549990), (5, 3639992), (8, 2274995), (10, 1819996), (20, 909998), (40, 454999), (61, 298360), (122, 149180), (244, 74590), (305, 59672), (488, 37295), (610, 29836), (1220, 14918), (2440, 7459)]