21621740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{22063}}^1$

素因数の和:22086

約数の個数: 36

約数和(自身を含む): 52821216

約数和(自身を除く): 31199476

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 22063, 44126, 88252, 110315, 154441, 220630, 308882, 441260, 617764, 772205, 1081087, 1544410, 2162174, 3088820, 4324348, 5405435, 10810870, 21621740]

約数ペア:

[(1, 21621740), (2, 10810870), (4, 5405435), (5, 4324348), (7, 3088820), (10, 2162174), (14, 1544410), (20, 1081087), (28, 772205), (35, 617764), (49, 441260), (70, 308882), (98, 220630), (140, 154441), (196, 110315), (245, 88252), (490, 44126), (980, 22063)]