20528475

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{167}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 37497600

約数和(自身を除く): 16969125

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 149, 165, 167, 275, 447, 501, 745, 825, 835, 1639, 1837, 2235, 2505, 3725, 4175, 4917, 5511, 8195, 9185, 11175, 12525, 24585, 24883, 27555, 40975, 45925, 74649, 122925, 124415, 137775, 273713, 373245, 622075, 821139, 1368565, 1866225, 4105695, 6842825, 20528475]

約数ペア:

[(1, 20528475), (3, 6842825), (5, 4105695), (11, 1866225), (15, 1368565), (25, 821139), (33, 622075), (55, 373245), (75, 273713), (149, 137775), (165, 124415), (167, 122925), (275, 74649), (447, 45925), (501, 40975), (745, 27555), (825, 24883), (835, 24585), (1639, 12525), (1837, 11175), (2235, 9185), (2505, 8195), (3725, 5511), (4175, 4917)]