21606728

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1$

素因数の和:159

約数の個数: 96

約数和(自身を含む): 51279480

約数和(自身を除く): 29672752

約数列:

[1, 2, 4, 8, 11, 13, 17, 22, 26, 34, 44, 52, 68, 88, 101, 104, 121, 136, 143, 187, 202, 221, 242, 286, 374, 404, 442, 484, 572, 748, 808, 884, 968, 1111, 1144, 1313, 1496, 1573, 1717, 1768, 2057, 2222, 2431, 2626, 3146, 3434, 4114, 4444, 4862, 5252, 6292, 6868, 8228, 8888, 9724, 10504, 12221, 12584, 13736, 14443, 16456, 18887, 19448, 22321, 24442, 26741, 28886, 37774, 44642, 48884, 53482, 57772, 75548, 89284, 97768, 106964, 115544, 151096, 158873, 178568, 207757, 213928, 245531, 317746, 415514, 491062, 635492, 831028, 982124, 1270984, 1662056, 1964248, 2700841, 5401682, 10803364, 21606728]

約数ペア:

[(1, 21606728), (2, 10803364), (4, 5401682), (8, 2700841), (11, 1964248), (13, 1662056), (17, 1270984), (22, 982124), (26, 831028), (34, 635492), (44, 491062), (52, 415514), (68, 317746), (88, 245531), (101, 213928), (104, 207757), (121, 178568), (136, 158873), (143, 151096), (187, 115544), (202, 106964), (221, 97768), (242, 89284), (286, 75548), (374, 57772), (404, 53482), (442, 48884), (484, 44642), (572, 37774), (748, 28886), (808, 26741), (884, 24442), (968, 22321), (1111, 19448), (1144, 18887), (1313, 16456), (1496, 14443), (1573, 13736), (1717, 12584), (1768, 12221), (2057, 10504), (2222, 9724), (2431, 8888), (2626, 8228), (3146, 6868), (3434, 6292), (4114, 5252), (4444, 4862)]