8121990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1$

素因数の和:261

約数の個数: 64

約数和(自身を含む): 20736000

約数和(自身を除く): 12614010

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 79, 115, 138, 149, 158, 230, 237, 298, 345, 395, 447, 474, 690, 745, 790, 894, 1185, 1490, 1817, 2235, 2370, 3427, 3634, 4470, 5451, 6854, 9085, 10281, 10902, 11771, 17135, 18170, 20562, 23542, 27255, 34270, 35313, 51405, 54510, 58855, 70626, 102810, 117710, 176565, 270733, 353130, 541466, 812199, 1353665, 1624398, 2707330, 4060995, 8121990]

約数ペア:

[(1, 8121990), (2, 4060995), (3, 2707330), (5, 1624398), (6, 1353665), (10, 812199), (15, 541466), (23, 353130), (30, 270733), (46, 176565), (69, 117710), (79, 102810), (115, 70626), (138, 58855), (149, 54510), (158, 51405), (230, 35313), (237, 34270), (298, 27255), (345, 23542), (395, 20562), (447, 18170), (474, 17135), (690, 11771), (745, 10902), (790, 10281), (894, 9085), (1185, 6854), (1490, 5451), (1817, 4470), (2235, 3634), (2370, 3427)]