21359888

素因数分解:

$2^4\times {\mathrm{11}}^3\times {\mathrm{17}}^1\times {\mathrm{59}}^1$

素因数の和:117

約数の個数: 80

約数和(自身を含む): 49014720

約数和(自身を除く): 27654832

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 34, 44, 59, 68, 88, 118, 121, 136, 176, 187, 236, 242, 272, 374, 472, 484, 649, 748, 944, 968, 1003, 1298, 1331, 1496, 1936, 2006, 2057, 2596, 2662, 2992, 4012, 4114, 5192, 5324, 7139, 8024, 8228, 10384, 10648, 11033, 14278, 16048, 16456, 21296, 22066, 22627, 28556, 32912, 44132, 45254, 57112, 78529, 88264, 90508, 114224, 121363, 157058, 176528, 181016, 242726, 314116, 362032, 485452, 628232, 970904, 1256464, 1334993, 1941808, 2669986, 5339972, 10679944, 21359888]

約数ペア:

[(1, 21359888), (2, 10679944), (4, 5339972), (8, 2669986), (11, 1941808), (16, 1334993), (17, 1256464), (22, 970904), (34, 628232), (44, 485452), (59, 362032), (68, 314116), (88, 242726), (118, 181016), (121, 176528), (136, 157058), (176, 121363), (187, 114224), (236, 90508), (242, 88264), (272, 78529), (374, 57112), (472, 45254), (484, 44132), (649, 32912), (748, 28556), (944, 22627), (968, 22066), (1003, 21296), (1298, 16456), (1331, 16048), (1496, 14278), (1936, 11033), (2006, 10648), (2057, 10384), (2596, 8228), (2662, 8024), (2992, 7139), (4012, 5324), (4114, 5192)]