20021918

素因数分解:

$2^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{421}}^1$

素因数の和:552

約数の個数: 32

約数和(自身を含む): 35650560

約数和(自身を除く): 15628642

約数列:

[1, 2, 7, 14, 43, 79, 86, 158, 301, 421, 553, 602, 842, 1106, 2947, 3397, 5894, 6794, 18103, 23779, 33259, 36206, 47558, 66518, 126721, 232813, 253442, 465626, 1430137, 2860274, 10010959, 20021918]

約数ペア:

[(1, 20021918), (2, 10010959), (7, 2860274), (14, 1430137), (43, 465626), (79, 253442), (86, 232813), (158, 126721), (301, 66518), (421, 47558), (553, 36206), (602, 33259), (842, 23779), (1106, 18103), (2947, 6794), (3397, 5894)]