20128904

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{877}}^1$

素因数の和:1053

約数の個数: 32

約数和(自身を含む): 40036800

約数和(自身を除く): 19907896

約数列:

[1, 2, 4, 8, 19, 38, 76, 151, 152, 302, 604, 877, 1208, 1754, 2869, 3508, 5738, 7016, 11476, 16663, 22952, 33326, 66652, 132427, 133304, 264854, 529708, 1059416, 2516113, 5032226, 10064452, 20128904]

約数ペア:

[(1, 20128904), (2, 10064452), (4, 5032226), (8, 2516113), (19, 1059416), (38, 529708), (76, 264854), (151, 133304), (152, 132427), (302, 66652), (604, 33326), (877, 22952), (1208, 16663), (1754, 11476), (2869, 7016), (3508, 5738)]