898660

素因数分解:

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

素因数の和:161

約数の個数: 48

約数和(自身を含む): 2217600

約数和(自身を除く): 1318940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 131, 140, 196, 245, 262, 343, 490, 524, 655, 686, 917, 980, 1310, 1372, 1715, 1834, 2620, 3430, 3668, 4585, 6419, 6860, 9170, 12838, 18340, 25676, 32095, 44933, 64190, 89866, 128380, 179732, 224665, 449330, 898660]

約数ペア:

[(1, 898660), (2, 449330), (4, 224665), (5, 179732), (7, 128380), (10, 89866), (14, 64190), (20, 44933), (28, 32095), (35, 25676), (49, 18340), (70, 12838), (98, 9170), (131, 6860), (140, 6419), (196, 4585), (245, 3668), (262, 3430), (343, 2620), (490, 1834), (524, 1715), (655, 1372), (686, 1310), (917, 980)]