21193228

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{18461}}^1$

素因数の和:18513

約数の個数: 24

約数和(自身を含む): 43422624

約数和(自身を除く): 22229396

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148, 18461, 36922, 73844, 129227, 258454, 516908, 756901, 1513802, 3027604, 5298307, 10596614, 21193228]

約数ペア:

[(1, 21193228), (2, 10596614), (4, 5298307), (7, 3027604), (14, 1513802), (28, 756901), (41, 516908), (82, 258454), (164, 129227), (287, 73844), (574, 36922), (1148, 18461)]