661554882

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^2\times {\mathrm{61}}^1\times {\mathrm{1669}}^1$

素因数の和:1776

約数の個数: 72

約数和(自身を含む): 1538500860

約数和(自身を除く): 876945978

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 61, 114, 122, 171, 183, 342, 361, 366, 549, 722, 1083, 1098, 1159, 1669, 2166, 2318, 3249, 3338, 3477, 5007, 6498, 6954, 10014, 10431, 15021, 20862, 22021, 30042, 31711, 44042, 63422, 66063, 95133, 101809, 132126, 190266, 198189, 203618, 285399, 305427, 396378, 570798, 602509, 610854, 916281, 1205018, 1807527, 1832562, 1934371, 3615054, 3868742, 5422581, 5803113, 10845162, 11606226, 17409339, 34818678, 36753049, 73506098, 110259147, 220518294, 330777441, 661554882]

約数ペア:

[(1, 661554882), (2, 330777441), (3, 220518294), (6, 110259147), (9, 73506098), (18, 36753049), (19, 34818678), (38, 17409339), (57, 11606226), (61, 10845162), (114, 5803113), (122, 5422581), (171, 3868742), (183, 3615054), (342, 1934371), (361, 1832562), (366, 1807527), (549, 1205018), (722, 916281), (1083, 610854), (1098, 602509), (1159, 570798), (1669, 396378), (2166, 305427), (2318, 285399), (3249, 203618), (3338, 198189), (3477, 190266), (5007, 132126), (6498, 101809), (6954, 95133), (10014, 66063), (10431, 63422), (15021, 44042), (20862, 31711), (22021, 30042)]