21108816

素因数分解:

$2^4\times 3^3\times {\mathrm{131}}^1\times {\mathrm{373}}^1$

素因数の和:521

約数の個数: 80

約数和(自身を含む): 61216320

約数和(自身を除く): 40107504

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 108, 131, 144, 216, 262, 373, 393, 432, 524, 746, 786, 1048, 1119, 1179, 1492, 1572, 2096, 2238, 2358, 2984, 3144, 3357, 3537, 4476, 4716, 5968, 6288, 6714, 7074, 8952, 9432, 10071, 13428, 14148, 17904, 18864, 20142, 26856, 28296, 40284, 48863, 53712, 56592, 80568, 97726, 146589, 161136, 195452, 293178, 390904, 439767, 586356, 781808, 879534, 1172712, 1319301, 1759068, 2345424, 2638602, 3518136, 5277204, 7036272, 10554408, 21108816]

約数ペア:

[(1, 21108816), (2, 10554408), (3, 7036272), (4, 5277204), (6, 3518136), (8, 2638602), (9, 2345424), (12, 1759068), (16, 1319301), (18, 1172712), (24, 879534), (27, 781808), (36, 586356), (48, 439767), (54, 390904), (72, 293178), (108, 195452), (131, 161136), (144, 146589), (216, 97726), (262, 80568), (373, 56592), (393, 53712), (432, 48863), (524, 40284), (746, 28296), (786, 26856), (1048, 20142), (1119, 18864), (1179, 17904), (1492, 14148), (1572, 13428), (2096, 10071), (2238, 9432), (2358, 8952), (2984, 7074), (3144, 6714), (3357, 6288), (3537, 5968), (4476, 4716)]