21328472

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{269}}^1$

素因数の和:356

約数の個数: 64

約数和(自身を含む): 47239200

約数和(自身を除く): 25910728

約数列:

[1, 2, 4, 8, 11, 17, 22, 34, 44, 53, 68, 88, 106, 136, 187, 212, 269, 374, 424, 538, 583, 748, 901, 1076, 1166, 1496, 1802, 2152, 2332, 2959, 3604, 4573, 4664, 5918, 7208, 9146, 9911, 11836, 14257, 18292, 19822, 23672, 28514, 36584, 39644, 50303, 57028, 79288, 100606, 114056, 156827, 201212, 242369, 313654, 402424, 484738, 627308, 969476, 1254616, 1938952, 2666059, 5332118, 10664236, 21328472]

約数ペア:

[(1, 21328472), (2, 10664236), (4, 5332118), (8, 2666059), (11, 1938952), (17, 1254616), (22, 969476), (34, 627308), (44, 484738), (53, 402424), (68, 313654), (88, 242369), (106, 201212), (136, 156827), (187, 114056), (212, 100606), (269, 79288), (374, 57028), (424, 50303), (538, 39644), (583, 36584), (748, 28514), (901, 23672), (1076, 19822), (1166, 18292), (1496, 14257), (1802, 11836), (2152, 9911), (2332, 9146), (2959, 7208), (3604, 5918), (4573, 4664)]