20105880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1279}}^1$

素因数の和:1424

約数の個数: 64

約数和(自身を含む): 60825600

約数和(自身を除く): 40719720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 131, 262, 393, 524, 655, 786, 1048, 1279, 1310, 1572, 1965, 2558, 2620, 3144, 3837, 3930, 5116, 5240, 6395, 7674, 7860, 10232, 12790, 15348, 15720, 19185, 25580, 30696, 38370, 51160, 76740, 153480, 167549, 335098, 502647, 670196, 837745, 1005294, 1340392, 1675490, 2010588, 2513235, 3350980, 4021176, 5026470, 6701960, 10052940, 20105880]

約数ペア:

[(1, 20105880), (2, 10052940), (3, 6701960), (4, 5026470), (5, 4021176), (6, 3350980), (8, 2513235), (10, 2010588), (12, 1675490), (15, 1340392), (20, 1005294), (24, 837745), (30, 670196), (40, 502647), (60, 335098), (120, 167549), (131, 153480), (262, 76740), (393, 51160), (524, 38370), (655, 30696), (786, 25580), (1048, 19185), (1279, 15720), (1310, 15348), (1572, 12790), (1965, 10232), (2558, 7860), (2620, 7674), (3144, 6395), (3837, 5240), (3930, 5116)]