21060416

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1489}}^1$

素因数の和:1531

約数の個数: 56

約数和(自身を含む): 47685960

約数和(自身を除く): 26625544

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 64, 68, 104, 136, 208, 221, 272, 416, 442, 544, 832, 884, 1088, 1489, 1768, 2978, 3536, 5956, 7072, 11912, 14144, 19357, 23824, 25313, 38714, 47648, 50626, 77428, 95296, 101252, 154856, 202504, 309712, 329069, 405008, 619424, 658138, 810016, 1238848, 1316276, 1620032, 2632552, 5265104, 10530208, 21060416]

約数ペア:

[(1, 21060416), (2, 10530208), (4, 5265104), (8, 2632552), (13, 1620032), (16, 1316276), (17, 1238848), (26, 810016), (32, 658138), (34, 619424), (52, 405008), (64, 329069), (68, 309712), (104, 202504), (136, 154856), (208, 101252), (221, 95296), (272, 77428), (416, 50626), (442, 47648), (544, 38714), (832, 25313), (884, 23824), (1088, 19357), (1489, 14144), (1768, 11912), (2978, 7072), (3536, 5956)]