21220264

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{10739}}^1$

素因数の和:10777

約数の個数: 32

約数和(自身を含む): 45108000

約数和(自身を除く): 23887736

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 247, 494, 988, 1976, 10739, 21478, 42956, 85912, 139607, 204041, 279214, 408082, 558428, 816164, 1116856, 1632328, 2652533, 5305066, 10610132, 21220264]

約数ペア:

[(1, 21220264), (2, 10610132), (4, 5305066), (8, 2652533), (13, 1632328), (19, 1116856), (26, 816164), (38, 558428), (52, 408082), (76, 279214), (104, 204041), (152, 139607), (247, 85912), (494, 42956), (988, 21478), (1976, 10739)]