28219575

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{22133}}^1$

素因数の和:22163

約数の個数: 24

約数和(自身を含む): 49403088

約数和(自身を除く): 21183513

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 22133, 66399, 110665, 331995, 376261, 553325, 1128783, 1659975, 1881305, 5643915, 9406525, 28219575]

約数ペア:

[(1, 28219575), (3, 9406525), (5, 5643915), (15, 1881305), (17, 1659975), (25, 1128783), (51, 553325), (75, 376261), (85, 331995), (255, 110665), (425, 66399), (1275, 22133)]