20125750

素因数分解:

$2^1\times 5^3\times {\mathrm{19}}^2\times {\mathrm{223}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 39940992

約数和(自身を除く): 19815242

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 125, 190, 223, 250, 361, 446, 475, 722, 950, 1115, 1805, 2230, 2375, 3610, 4237, 4750, 5575, 8474, 9025, 11150, 18050, 21185, 27875, 42370, 45125, 55750, 80503, 90250, 105925, 161006, 211850, 402515, 529625, 805030, 1059250, 2012575, 4025150, 10062875, 20125750]

約数ペア:

[(1, 20125750), (2, 10062875), (5, 4025150), (10, 2012575), (19, 1059250), (25, 805030), (38, 529625), (50, 402515), (95, 211850), (125, 161006), (190, 105925), (223, 90250), (250, 80503), (361, 55750), (446, 45125), (475, 42370), (722, 27875), (950, 21185), (1115, 18050), (1805, 11150), (2230, 9025), (2375, 8474), (3610, 5575), (4237, 4750)]