25345420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{491}}^1$

素因数の和:618

約数の個数: 48

約数和(自身を含む): 55792800

約数和(自身を除く): 30447380

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 89, 116, 145, 178, 290, 356, 445, 491, 580, 890, 982, 1780, 1964, 2455, 2581, 4910, 5162, 9820, 10324, 12905, 14239, 25810, 28478, 43699, 51620, 56956, 71195, 87398, 142390, 174796, 218495, 284780, 436990, 873980, 1267271, 2534542, 5069084, 6336355, 12672710, 25345420]

約数ペア:

[(1, 25345420), (2, 12672710), (4, 6336355), (5, 5069084), (10, 2534542), (20, 1267271), (29, 873980), (58, 436990), (89, 284780), (116, 218495), (145, 174796), (178, 142390), (290, 87398), (356, 71195), (445, 56956), (491, 51620), (580, 43699), (890, 28478), (982, 25810), (1780, 14239), (1964, 12905), (2455, 10324), (2581, 9820), (4910, 5162)]