28087840

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{15959}}^1$

素因数の和:15985

約数の個数: 48

約数和(自身を含む): 72394560

約数和(自身を除く): 44306720

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 15959, 31918, 63836, 79795, 127672, 159590, 175549, 255344, 319180, 351098, 510688, 638360, 702196, 877745, 1276720, 1404392, 1755490, 2553440, 2808784, 3510980, 5617568, 7021960, 14043920, 28087840]

約数ペア:

[(1, 28087840), (2, 14043920), (4, 7021960), (5, 5617568), (8, 3510980), (10, 2808784), (11, 2553440), (16, 1755490), (20, 1404392), (22, 1276720), (32, 877745), (40, 702196), (44, 638360), (55, 510688), (80, 351098), (88, 319180), (110, 255344), (160, 175549), (176, 159590), (220, 127672), (352, 79795), (440, 63836), (880, 31918), (1760, 15959)]