21195120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{1879}}^1$

素因数の和:1942

約数の個数: 80

約数和(自身を含む): 67138560

約数和(自身を除く): 45943440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 47, 48, 60, 80, 94, 120, 141, 188, 235, 240, 282, 376, 470, 564, 705, 752, 940, 1128, 1410, 1879, 1880, 2256, 2820, 3758, 3760, 5637, 5640, 7516, 9395, 11274, 11280, 15032, 18790, 22548, 28185, 30064, 37580, 45096, 56370, 75160, 88313, 90192, 112740, 150320, 176626, 225480, 264939, 353252, 441565, 450960, 529878, 706504, 883130, 1059756, 1324695, 1413008, 1766260, 2119512, 2649390, 3532520, 4239024, 5298780, 7065040, 10597560, 21195120]

約数ペア:

[(1, 21195120), (2, 10597560), (3, 7065040), (4, 5298780), (5, 4239024), (6, 3532520), (8, 2649390), (10, 2119512), (12, 1766260), (15, 1413008), (16, 1324695), (20, 1059756), (24, 883130), (30, 706504), (40, 529878), (47, 450960), (48, 441565), (60, 353252), (80, 264939), (94, 225480), (120, 176626), (141, 150320), (188, 112740), (235, 90192), (240, 88313), (282, 75160), (376, 56370), (470, 45096), (564, 37580), (705, 30064), (752, 28185), (940, 22548), (1128, 18790), (1410, 15032), (1879, 11280), (1880, 11274), (2256, 9395), (2820, 7516), (3758, 5640), (3760, 5637)]