402014780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{3181}}^1$

素因数の和:3350

約数の個数: 48

約数和(自身を含む): 866013120

約数和(自身を除く): 463998340

約数列:

[1, 2, 4, 5, 10, 20, 71, 89, 142, 178, 284, 355, 356, 445, 710, 890, 1420, 1780, 3181, 6319, 6362, 12638, 12724, 15905, 25276, 31595, 31810, 63190, 63620, 126380, 225851, 283109, 451702, 566218, 903404, 1129255, 1132436, 1415545, 2258510, 2831090, 4517020, 5662180, 20100739, 40201478, 80402956, 100503695, 201007390, 402014780]

約数ペア:

[(1, 402014780), (2, 201007390), (4, 100503695), (5, 80402956), (10, 40201478), (20, 20100739), (71, 5662180), (89, 4517020), (142, 2831090), (178, 2258510), (284, 1415545), (355, 1132436), (356, 1129255), (445, 903404), (710, 566218), (890, 451702), (1420, 283109), (1780, 225851), (3181, 126380), (6319, 63620), (6362, 63190), (12638, 31810), (12724, 31595), (15905, 25276)]