40272020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{809}}^1$

素因数の和:968

約数の個数: 48

約数和(自身を含む): 89812800

約数和(自身を除く): 49540780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 131, 190, 262, 380, 524, 655, 809, 1310, 1618, 2489, 2620, 3236, 4045, 4978, 8090, 9956, 12445, 15371, 16180, 24890, 30742, 49780, 61484, 76855, 105979, 153710, 211958, 307420, 423916, 529895, 1059790, 2013601, 2119580, 4027202, 8054404, 10068005, 20136010, 40272020]

約数ペア:

[(1, 40272020), (2, 20136010), (4, 10068005), (5, 8054404), (10, 4027202), (19, 2119580), (20, 2013601), (38, 1059790), (76, 529895), (95, 423916), (131, 307420), (190, 211958), (262, 153710), (380, 105979), (524, 76855), (655, 61484), (809, 49780), (1310, 30742), (1618, 24890), (2489, 16180), (2620, 15371), (3236, 12445), (4045, 9956), (4978, 8090)]