20178800404

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{728687}}^1$

素因数の和:728764

約数の個数: 48

約数和(自身を含む): 43091693568

約数和(自身を除く): 22912893164

約数列:

[1, 2, 4, 7, 14, 23, 28, 43, 46, 86, 92, 161, 172, 301, 322, 602, 644, 989, 1204, 1978, 3956, 6923, 13846, 27692, 728687, 1457374, 2914748, 5100809, 10201618, 16759801, 20403236, 31333541, 33519602, 62667082, 67039204, 117318607, 125334164, 219334787, 234637214, 438669574, 469274428, 720671443, 877339148, 1441342886, 2882685772, 5044700101, 10089400202, 20178800404]

約数ペア:

[(1, 20178800404), (2, 10089400202), (4, 5044700101), (7, 2882685772), (14, 1441342886), (23, 877339148), (28, 720671443), (43, 469274428), (46, 438669574), (86, 234637214), (92, 219334787), (161, 125334164), (172, 117318607), (301, 67039204), (322, 62667082), (602, 33519602), (644, 31333541), (989, 20403236), (1204, 16759801), (1978, 10201618), (3956, 5100809), (6923, 2914748), (13846, 1457374), (27692, 728687)]