18175220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{659}}^1$

素因数の和:872

約数の個数: 48

約数和(自身を含む): 43908480

約数和(自身を除く): 25733260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 197, 394, 659, 788, 985, 1318, 1379, 1970, 2636, 2758, 3295, 3940, 4613, 5516, 6590, 6895, 9226, 13180, 13790, 18452, 23065, 27580, 46130, 92260, 129823, 259646, 519292, 649115, 908761, 1298230, 1817522, 2596460, 3635044, 4543805, 9087610, 18175220]

約数ペア:

[(1, 18175220), (2, 9087610), (4, 4543805), (5, 3635044), (7, 2596460), (10, 1817522), (14, 1298230), (20, 908761), (28, 649115), (35, 519292), (70, 259646), (140, 129823), (197, 92260), (394, 46130), (659, 27580), (788, 23065), (985, 18452), (1318, 13790), (1379, 13180), (1970, 9226), (2636, 6895), (2758, 6590), (3295, 5516), (3940, 4613)]