28918240

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13903}}^1$

素因数の和:13931

約数の個数: 48

約数和(自身を含む): 73579968

約数和(自身を除く): 44661728

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 13903, 27806, 55612, 69515, 111224, 139030, 180739, 222448, 278060, 361478, 444896, 556120, 722956, 903695, 1112240, 1445912, 1807390, 2224480, 2891824, 3614780, 5783648, 7229560, 14459120, 28918240]

約数ペア:

[(1, 28918240), (2, 14459120), (4, 7229560), (5, 5783648), (8, 3614780), (10, 2891824), (13, 2224480), (16, 1807390), (20, 1445912), (26, 1112240), (32, 903695), (40, 722956), (52, 556120), (65, 444896), (80, 361478), (104, 278060), (130, 222448), (160, 180739), (208, 139030), (260, 111224), (416, 69515), (520, 55612), (1040, 27806), (2080, 13903)]