78839980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1\times {\mathrm{751}}^1$

素因数の和:970

約数の個数: 48

約数和(自身を含む): 172448640

約数和(自身を除く): 93608660

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 181, 290, 362, 580, 724, 751, 905, 1502, 1810, 3004, 3620, 3755, 5249, 7510, 10498, 15020, 20996, 21779, 26245, 43558, 52490, 87116, 104980, 108895, 135931, 217790, 271862, 435580, 543724, 679655, 1359310, 2718620, 3941999, 7883998, 15767996, 19709995, 39419990, 78839980]

約数ペア:

[(1, 78839980), (2, 39419990), (4, 19709995), (5, 15767996), (10, 7883998), (20, 3941999), (29, 2718620), (58, 1359310), (116, 679655), (145, 543724), (181, 435580), (290, 271862), (362, 217790), (580, 135931), (724, 108895), (751, 104980), (905, 87116), (1502, 52490), (1810, 43558), (3004, 26245), (3620, 21779), (3755, 20996), (5249, 15020), (7510, 10498)]