171977820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{409471}}^1$

素因数の和:409490

約数の個数: 48

約数和(自身を含む): 550330368

約数和(自身を除く): 378352548

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 409471, 818942, 1228413, 1637884, 2047355, 2456826, 2866297, 4094710, 4913652, 5732594, 6142065, 8189420, 8598891, 11465188, 12284130, 14331485, 17197782, 24568260, 28662970, 34395564, 42994455, 57325940, 85988910, 171977820]

約数ペア:

[(1, 171977820), (2, 85988910), (3, 57325940), (4, 42994455), (5, 34395564), (6, 28662970), (7, 24568260), (10, 17197782), (12, 14331485), (14, 12284130), (15, 11465188), (20, 8598891), (21, 8189420), (28, 6142065), (30, 5732594), (35, 4913652), (42, 4094710), (60, 2866297), (70, 2456826), (84, 2047355), (105, 1637884), (140, 1228413), (210, 818942), (420, 409471)]