205965620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{210169}}^1$

素因数の和:210192

約数の個数: 36

約数和(自身を含む): 503146980

約数和(自身を除く): 297181360

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 210169, 420338, 840676, 1050845, 1471183, 2101690, 2942366, 4203380, 5884732, 7355915, 10298281, 14711830, 20596562, 29423660, 41193124, 51491405, 102982810, 205965620]

約数ペア:

[(1, 205965620), (2, 102982810), (4, 51491405), (5, 41193124), (7, 29423660), (10, 20596562), (14, 14711830), (20, 10298281), (28, 7355915), (35, 5884732), (49, 4203380), (70, 2942366), (98, 2101690), (140, 1471183), (196, 1050845), (245, 840676), (490, 420338), (980, 210169)]