21128394

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{11699}}^1$

素因数の和:11754

約数の個数: 32

約数和(自身を含む): 49420800

約数和(自身を除く): 28292406

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 43, 86, 129, 258, 301, 602, 903, 1806, 11699, 23398, 35097, 70194, 81893, 163786, 245679, 491358, 503057, 1006114, 1509171, 3018342, 3521399, 7042798, 10564197, 21128394]

約数ペア:

[(1, 21128394), (2, 10564197), (3, 7042798), (6, 3521399), (7, 3018342), (14, 1509171), (21, 1006114), (42, 503057), (43, 491358), (86, 245679), (129, 163786), (258, 81893), (301, 70194), (602, 35097), (903, 23398), (1806, 11699)]