21567280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2027}}^1$

素因数の和:2066

約数の個数: 80

約数和(自身を含む): 60353280

約数和(自身を除く): 38786000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 190, 266, 280, 304, 380, 532, 560, 665, 760, 1064, 1330, 1520, 2027, 2128, 2660, 4054, 5320, 8108, 10135, 10640, 14189, 16216, 20270, 28378, 32432, 38513, 40540, 56756, 70945, 77026, 81080, 113512, 141890, 154052, 162160, 192565, 227024, 269591, 283780, 308104, 385130, 539182, 567560, 616208, 770260, 1078364, 1135120, 1347955, 1540520, 2156728, 2695910, 3081040, 4313456, 5391820, 10783640, 21567280]

約数ペア:

[(1, 21567280), (2, 10783640), (4, 5391820), (5, 4313456), (7, 3081040), (8, 2695910), (10, 2156728), (14, 1540520), (16, 1347955), (19, 1135120), (20, 1078364), (28, 770260), (35, 616208), (38, 567560), (40, 539182), (56, 385130), (70, 308104), (76, 283780), (80, 269591), (95, 227024), (112, 192565), (133, 162160), (140, 154052), (152, 141890), (190, 113512), (266, 81080), (280, 77026), (304, 70945), (380, 56756), (532, 40540), (560, 38513), (665, 32432), (760, 28378), (1064, 20270), (1330, 16216), (1520, 14189), (2027, 10640), (2128, 10135), (2660, 8108), (4054, 5320)]