161181580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{164471}}^1$

素因数の和:164494

約数の個数: 36

約数和(自身を含む): 393745968

約数和(自身を除く): 232564388

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 164471, 328942, 657884, 822355, 1151297, 1644710, 2302594, 3289420, 4605188, 5756485, 8059079, 11512970, 16118158, 23025940, 32236316, 40295395, 80590790, 161181580]

約数ペア:

[(1, 161181580), (2, 80590790), (4, 40295395), (5, 32236316), (7, 23025940), (10, 16118158), (14, 11512970), (20, 8059079), (28, 5756485), (35, 4605188), (49, 3289420), (70, 2302594), (98, 1644710), (140, 1151297), (196, 822355), (245, 657884), (490, 328942), (980, 164471)]