21000632080

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2309}}^1\times {\mathrm{4943}}^1$

素因数の和:7288

約数の個数: 80

約数和(自身を含む): 50981736960

約数和(自身を除く): 29981104880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 2309, 4618, 4943, 9236, 9886, 11545, 18472, 19772, 23090, 24715, 36944, 39544, 46180, 49430, 53107, 79088, 92360, 98860, 106214, 113689, 184720, 197720, 212428, 227378, 265535, 395440, 424856, 454756, 531070, 568445, 849712, 909512, 1062140, 1136890, 1819024, 2124280, 2273780, 4248560, 4547560, 9095120, 11413387, 22826774, 45653548, 57066935, 91307096, 114133870, 182614192, 228267740, 262507901, 456535480, 525015802, 913070960, 1050031604, 1312539505, 2100063208, 2625079010, 4200126416, 5250158020, 10500316040, 21000632080]

約数ペア:

[(1, 21000632080), (2, 10500316040), (4, 5250158020), (5, 4200126416), (8, 2625079010), (10, 2100063208), (16, 1312539505), (20, 1050031604), (23, 913070960), (40, 525015802), (46, 456535480), (80, 262507901), (92, 228267740), (115, 182614192), (184, 114133870), (230, 91307096), (368, 57066935), (460, 45653548), (920, 22826774), (1840, 11413387), (2309, 9095120), (4618, 4547560), (4943, 4248560), (9236, 2273780), (9886, 2124280), (11545, 1819024), (18472, 1136890), (19772, 1062140), (23090, 909512), (24715, 849712), (36944, 568445), (39544, 531070), (46180, 454756), (49430, 424856), (53107, 395440), (79088, 265535), (92360, 227378), (98860, 212428), (106214, 197720), (113689, 184720)]