21690340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{22133}}^1$

素因数の和:22156

約数の個数: 36

約数和(自身を含む): 52988796

約数和(自身を除く): 31298456

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 22133, 44266, 88532, 110665, 154931, 221330, 309862, 442660, 619724, 774655, 1084517, 1549310, 2169034, 3098620, 4338068, 5422585, 10845170, 21690340]

約数ペア:

[(1, 21690340), (2, 10845170), (4, 5422585), (5, 4338068), (7, 3098620), (10, 2169034), (14, 1549310), (20, 1084517), (28, 774655), (35, 619724), (49, 442660), (70, 309862), (98, 221330), (140, 154931), (196, 110665), (245, 88532), (490, 44266), (980, 22133)]