21003476

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{7621}}^1$

素因数の和:7691

約数の個数: 24

約数和(自身を含む): 40335624

約数和(自身を除く): 19332148

約数列:

[1, 2, 4, 13, 26, 52, 53, 106, 212, 689, 1378, 2756, 7621, 15242, 30484, 99073, 198146, 396292, 403913, 807826, 1615652, 5250869, 10501738, 21003476]

約数ペア:

[(1, 21003476), (2, 10501738), (4, 5250869), (13, 1615652), (26, 807826), (52, 403913), (53, 396292), (106, 198146), (212, 99073), (689, 30484), (1378, 15242), (2756, 7621)]