25252520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{223}}^1$

素因数の和:402

約数の個数: 64

約数和(自身を含む): 60480000

約数和(自身を除く): 35227480

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 149, 152, 190, 223, 298, 380, 446, 596, 745, 760, 892, 1115, 1192, 1490, 1784, 2230, 2831, 2980, 4237, 4460, 5662, 5960, 8474, 8920, 11324, 14155, 16948, 21185, 22648, 28310, 33227, 33896, 42370, 56620, 66454, 84740, 113240, 132908, 166135, 169480, 265816, 332270, 631313, 664540, 1262626, 1329080, 2525252, 3156565, 5050504, 6313130, 12626260, 25252520]

約数ペア:

[(1, 25252520), (2, 12626260), (4, 6313130), (5, 5050504), (8, 3156565), (10, 2525252), (19, 1329080), (20, 1262626), (38, 664540), (40, 631313), (76, 332270), (95, 265816), (149, 169480), (152, 166135), (190, 132908), (223, 113240), (298, 84740), (380, 66454), (446, 56620), (596, 42370), (745, 33896), (760, 33227), (892, 28310), (1115, 22648), (1192, 21185), (1490, 16948), (1784, 14155), (2230, 11324), (2831, 8920), (2980, 8474), (4237, 5960), (4460, 5662)]