81328730

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{131}}^1\times {\mathrm{181}}^1$

素因数の和:340

約数の個数: 64

約数和(自身を含む): 172972800

約数和(自身を除く): 91644070

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 131, 181, 245, 262, 343, 362, 490, 655, 686, 905, 917, 1267, 1310, 1715, 1810, 1834, 2534, 3430, 4585, 6335, 6419, 8869, 9170, 12670, 12838, 17738, 23711, 32095, 44345, 44933, 47422, 62083, 64190, 88690, 89866, 118555, 124166, 165977, 224665, 237110, 310415, 331954, 449330, 620830, 829885, 1161839, 1659770, 2323678, 5809195, 8132873, 11618390, 16265746, 40664365, 81328730]

約数ペア:

[(1, 81328730), (2, 40664365), (5, 16265746), (7, 11618390), (10, 8132873), (14, 5809195), (35, 2323678), (49, 1659770), (70, 1161839), (98, 829885), (131, 620830), (181, 449330), (245, 331954), (262, 310415), (343, 237110), (362, 224665), (490, 165977), (655, 124166), (686, 118555), (905, 89866), (917, 88690), (1267, 64190), (1310, 62083), (1715, 47422), (1810, 44933), (1834, 44345), (2534, 32095), (3430, 23711), (4585, 17738), (6335, 12838), (6419, 12670), (8869, 9170)]