21564240

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{4729}}^1$

素因数の和:4764

約数の個数: 80

約数和(自身を含む): 70382400

約数和(自身を除く): 48818160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 48, 57, 60, 76, 80, 95, 114, 120, 152, 190, 228, 240, 285, 304, 380, 456, 570, 760, 912, 1140, 1520, 2280, 4560, 4729, 9458, 14187, 18916, 23645, 28374, 37832, 47290, 56748, 70935, 75664, 89851, 94580, 113496, 141870, 179702, 189160, 226992, 269553, 283740, 359404, 378320, 449255, 539106, 567480, 718808, 898510, 1078212, 1134960, 1347765, 1437616, 1797020, 2156424, 2695530, 3594040, 4312848, 5391060, 7188080, 10782120, 21564240]

約数ペア:

[(1, 21564240), (2, 10782120), (3, 7188080), (4, 5391060), (5, 4312848), (6, 3594040), (8, 2695530), (10, 2156424), (12, 1797020), (15, 1437616), (16, 1347765), (19, 1134960), (20, 1078212), (24, 898510), (30, 718808), (38, 567480), (40, 539106), (48, 449255), (57, 378320), (60, 359404), (76, 283740), (80, 269553), (95, 226992), (114, 189160), (120, 179702), (152, 141870), (190, 113496), (228, 94580), (240, 89851), (285, 75664), (304, 70935), (380, 56748), (456, 47290), (570, 37832), (760, 28374), (912, 23645), (1140, 18916), (1520, 14187), (2280, 9458), (4560, 4729)]