21158000

素因数分解:

$2^4\times 5^3\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:243

約数の個数: 80

約数和(自身を含む): 52228800

約数和(自身を除く): 31070800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 71, 80, 100, 125, 142, 149, 200, 250, 284, 298, 355, 400, 500, 568, 596, 710, 745, 1000, 1136, 1192, 1420, 1490, 1775, 2000, 2384, 2840, 2980, 3550, 3725, 5680, 5960, 7100, 7450, 8875, 10579, 11920, 14200, 14900, 17750, 18625, 21158, 28400, 29800, 35500, 37250, 42316, 52895, 59600, 71000, 74500, 84632, 105790, 142000, 149000, 169264, 211580, 264475, 298000, 423160, 528950, 846320, 1057900, 1322375, 2115800, 2644750, 4231600, 5289500, 10579000, 21158000]

約数ペア:

[(1, 21158000), (2, 10579000), (4, 5289500), (5, 4231600), (8, 2644750), (10, 2115800), (16, 1322375), (20, 1057900), (25, 846320), (40, 528950), (50, 423160), (71, 298000), (80, 264475), (100, 211580), (125, 169264), (142, 149000), (149, 142000), (200, 105790), (250, 84632), (284, 74500), (298, 71000), (355, 59600), (400, 52895), (500, 42316), (568, 37250), (596, 35500), (710, 29800), (745, 28400), (1000, 21158), (1136, 18625), (1192, 17750), (1420, 14900), (1490, 14200), (1775, 11920), (2000, 10579), (2384, 8875), (2840, 7450), (2980, 7100), (3550, 5960), (3725, 5680)]