78668788

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{349}}^1$

素因数の和:520

約数の個数: 48

約数和(自身を含む): 155232000

約数和(自身を除く): 76563212

約数列:

[1, 2, 4, 11, 22, 44, 47, 94, 109, 188, 218, 349, 436, 517, 698, 1034, 1199, 1396, 2068, 2398, 3839, 4796, 5123, 7678, 10246, 15356, 16403, 20492, 32806, 38041, 56353, 65612, 76082, 112706, 152164, 180433, 225412, 360866, 418451, 721732, 836902, 1673804, 1787927, 3575854, 7151708, 19667197, 39334394, 78668788]

約数ペア:

[(1, 78668788), (2, 39334394), (4, 19667197), (11, 7151708), (22, 3575854), (44, 1787927), (47, 1673804), (94, 836902), (109, 721732), (188, 418451), (218, 360866), (349, 225412), (436, 180433), (517, 152164), (698, 112706), (1034, 76082), (1199, 65612), (1396, 56353), (2068, 38041), (2398, 32806), (3839, 20492), (4796, 16403), (5123, 15356), (7678, 10246)]