40399240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{919}}^1$

素因数の和:1094

約数の個数: 64

約数和(自身を含む): 104659200

約数和(自身を除く): 64259960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 157, 280, 314, 628, 785, 919, 1099, 1256, 1570, 1838, 2198, 3140, 3676, 4396, 4595, 5495, 6280, 6433, 7352, 8792, 9190, 10990, 12866, 18380, 21980, 25732, 32165, 36760, 43960, 51464, 64330, 128660, 144283, 257320, 288566, 577132, 721415, 1009981, 1154264, 1442830, 2019962, 2885660, 4039924, 5049905, 5771320, 8079848, 10099810, 20199620, 40399240]

約数ペア:

[(1, 40399240), (2, 20199620), (4, 10099810), (5, 8079848), (7, 5771320), (8, 5049905), (10, 4039924), (14, 2885660), (20, 2019962), (28, 1442830), (35, 1154264), (40, 1009981), (56, 721415), (70, 577132), (140, 288566), (157, 257320), (280, 144283), (314, 128660), (628, 64330), (785, 51464), (919, 43960), (1099, 36760), (1256, 32165), (1570, 25732), (1838, 21980), (2198, 18380), (3140, 12866), (3676, 10990), (4396, 9190), (4595, 8792), (5495, 7352), (6280, 6433)]