21645104

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5477}}^1$

素因数の和:5517

約数の個数: 40

約数和(自身を含む): 47549040

約数和(自身を除く): 25903936

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 5477, 10954, 21908, 43816, 71201, 87632, 104063, 142402, 208126, 284804, 416252, 569608, 832504, 1139216, 1352819, 1665008, 2705638, 5411276, 10822552, 21645104]

約数ペア:

[(1, 21645104), (2, 10822552), (4, 5411276), (8, 2705638), (13, 1665008), (16, 1352819), (19, 1139216), (26, 832504), (38, 569608), (52, 416252), (76, 284804), (104, 208126), (152, 142402), (208, 104063), (247, 87632), (304, 71201), (494, 43816), (988, 21908), (1976, 10954), (3952, 5477)]