82121420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{1097}}^1$

素因数の和:1322

約数の個数: 48

約数和(自身を含む): 182619360

約数和(自身を除く): 100497940

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 197, 380, 394, 788, 985, 1097, 1970, 2194, 3743, 3940, 4388, 5485, 7486, 10970, 14972, 18715, 20843, 21940, 37430, 41686, 74860, 83372, 104215, 208430, 216109, 416860, 432218, 864436, 1080545, 2161090, 4106071, 4322180, 8212142, 16424284, 20530355, 41060710, 82121420]

約数ペア:

[(1, 82121420), (2, 41060710), (4, 20530355), (5, 16424284), (10, 8212142), (19, 4322180), (20, 4106071), (38, 2161090), (76, 1080545), (95, 864436), (190, 432218), (197, 416860), (380, 216109), (394, 208430), (788, 104215), (985, 83372), (1097, 74860), (1970, 41686), (2194, 37430), (3743, 21940), (3940, 20843), (4388, 18715), (5485, 14972), (7486, 10970)]