21618180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1447}}^1$

素因数の和:1545

約数の個数: 72

約数和(自身を含む): 66411072

約数和(自身を除く): 44792892

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 83, 90, 166, 180, 249, 332, 415, 498, 747, 830, 996, 1245, 1447, 1494, 1660, 2490, 2894, 2988, 3735, 4341, 4980, 5788, 7235, 7470, 8682, 13023, 14470, 14940, 17364, 21705, 26046, 28940, 43410, 52092, 65115, 86820, 120101, 130230, 240202, 260460, 360303, 480404, 600505, 720606, 1080909, 1201010, 1441212, 1801515, 2161818, 2402020, 3603030, 4323636, 5404545, 7206060, 10809090, 21618180]

約数ペア:

[(1, 21618180), (2, 10809090), (3, 7206060), (4, 5404545), (5, 4323636), (6, 3603030), (9, 2402020), (10, 2161818), (12, 1801515), (15, 1441212), (18, 1201010), (20, 1080909), (30, 720606), (36, 600505), (45, 480404), (60, 360303), (83, 260460), (90, 240202), (166, 130230), (180, 120101), (249, 86820), (332, 65115), (415, 52092), (498, 43410), (747, 28940), (830, 26046), (996, 21705), (1245, 17364), (1447, 14940), (1494, 14470), (1660, 13023), (2490, 8682), (2894, 7470), (2988, 7235), (3735, 5788), (4341, 4980)]