18211980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{433}}^1\times {\mathrm{701}}^1$

素因数の和:1146

約数の個数: 48

約数和(自身を含む): 51184224

約数和(自身を除く): 32972244

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 433, 701, 866, 1299, 1402, 1732, 2103, 2165, 2598, 2804, 3505, 4206, 4330, 5196, 6495, 7010, 8412, 8660, 10515, 12990, 14020, 21030, 25980, 42060, 303533, 607066, 910599, 1214132, 1517665, 1821198, 3035330, 3642396, 4552995, 6070660, 9105990, 18211980]

約数ペア:

[(1, 18211980), (2, 9105990), (3, 6070660), (4, 4552995), (5, 3642396), (6, 3035330), (10, 1821198), (12, 1517665), (15, 1214132), (20, 910599), (30, 607066), (60, 303533), (433, 42060), (701, 25980), (866, 21030), (1299, 14020), (1402, 12990), (1732, 10515), (2103, 8660), (2165, 8412), (2598, 7010), (2804, 6495), (3505, 5196), (4206, 4330)]