28881320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55541}}^1$

素因数の和:55565

約数の個数: 32

約数和(自身を含む): 69982920

約数和(自身を除く): 41101600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 55541, 111082, 222164, 277705, 444328, 555410, 722033, 1110820, 1444066, 2221640, 2888132, 3610165, 5776264, 7220330, 14440660, 28881320]

約数ペア:

[(1, 28881320), (2, 14440660), (4, 7220330), (5, 5776264), (8, 3610165), (10, 2888132), (13, 2221640), (20, 1444066), (26, 1110820), (40, 722033), (52, 555410), (65, 444328), (104, 277705), (130, 222164), (260, 111082), (520, 55541)]