80969920

素因数分解:

$2^6\times 5^1\times {\mathrm{401}}^1\times {\mathrm{631}}^1$

素因数の和:1049

約数の個数: 56

約数和(自身を含む): 193596768

約数和(自身を除く): 112626848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 401, 631, 802, 1262, 1604, 2005, 2524, 3155, 3208, 4010, 5048, 6310, 6416, 8020, 10096, 12620, 12832, 16040, 20192, 25240, 25664, 32080, 40384, 50480, 64160, 100960, 128320, 201920, 253031, 506062, 1012124, 1265155, 2024248, 2530310, 4048496, 5060620, 8096992, 10121240, 16193984, 20242480, 40484960, 80969920]

約数ペア:

[(1, 80969920), (2, 40484960), (4, 20242480), (5, 16193984), (8, 10121240), (10, 8096992), (16, 5060620), (20, 4048496), (32, 2530310), (40, 2024248), (64, 1265155), (80, 1012124), (160, 506062), (320, 253031), (401, 201920), (631, 128320), (802, 100960), (1262, 64160), (1604, 50480), (2005, 40384), (2524, 32080), (3155, 25664), (3208, 25240), (4010, 20192), (5048, 16040), (6310, 12832), (6416, 12620), (8020, 10096)]