21114920

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{389}}^1$

素因数の和:482

約数の個数: 64

約数和(自身を含む): 50544000

約数和(自身を除く): 29429080

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 59, 92, 115, 118, 184, 230, 236, 295, 389, 460, 472, 590, 778, 920, 1180, 1357, 1556, 1945, 2360, 2714, 3112, 3890, 5428, 6785, 7780, 8947, 10856, 13570, 15560, 17894, 22951, 27140, 35788, 44735, 45902, 54280, 71576, 89470, 91804, 114755, 178940, 183608, 229510, 357880, 459020, 527873, 918040, 1055746, 2111492, 2639365, 4222984, 5278730, 10557460, 21114920]

約数ペア:

[(1, 21114920), (2, 10557460), (4, 5278730), (5, 4222984), (8, 2639365), (10, 2111492), (20, 1055746), (23, 918040), (40, 527873), (46, 459020), (59, 357880), (92, 229510), (115, 183608), (118, 178940), (184, 114755), (230, 91804), (236, 89470), (295, 71576), (389, 54280), (460, 45902), (472, 44735), (590, 35788), (778, 27140), (920, 22951), (1180, 17894), (1357, 15560), (1556, 13570), (1945, 10856), (2360, 8947), (2714, 7780), (3112, 6785), (3890, 5428)]