18013480

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:314

約数の個数: 64

約数和(自身を含む): 42624000

約数和(自身を除く): 24610520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 73, 124, 146, 155, 199, 248, 292, 310, 365, 398, 584, 620, 730, 796, 995, 1240, 1460, 1592, 1990, 2263, 2920, 3980, 4526, 6169, 7960, 9052, 11315, 12338, 14527, 18104, 22630, 24676, 29054, 30845, 45260, 49352, 58108, 61690, 72635, 90520, 116216, 123380, 145270, 246760, 290540, 450337, 581080, 900674, 1801348, 2251685, 3602696, 4503370, 9006740, 18013480]

約数ペア:

[(1, 18013480), (2, 9006740), (4, 4503370), (5, 3602696), (8, 2251685), (10, 1801348), (20, 900674), (31, 581080), (40, 450337), (62, 290540), (73, 246760), (124, 145270), (146, 123380), (155, 116216), (199, 90520), (248, 72635), (292, 61690), (310, 58108), (365, 49352), (398, 45260), (584, 30845), (620, 29054), (730, 24676), (796, 22630), (995, 18104), (1240, 14527), (1460, 12338), (1592, 11315), (1990, 9052), (2263, 7960), (2920, 6169), (3980, 4526)]