78255220

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{21859}}^1$

素因数の和:22047

約数の個数: 24

約数和(自身を含む): 165261600

約数和(自身を除く): 87006380

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 21859, 43718, 87436, 109295, 218590, 437180, 3912761, 7825522, 15651044, 19563805, 39127610, 78255220]

約数ペア:

[(1, 78255220), (2, 39127610), (4, 19563805), (5, 15651044), (10, 7825522), (20, 3912761), (179, 437180), (358, 218590), (716, 109295), (895, 87436), (1790, 43718), (3580, 21859)]