21915120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{719}}^1$

素因数の和:862

約数の個数: 80

約数和(自身を含む): 68567040

約数和(自身を除く): 46651920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 127, 240, 254, 381, 508, 635, 719, 762, 1016, 1270, 1438, 1524, 1905, 2032, 2157, 2540, 2876, 3048, 3595, 3810, 4314, 5080, 5752, 6096, 7190, 7620, 8628, 10160, 10785, 11504, 14380, 15240, 17256, 21570, 28760, 30480, 34512, 43140, 57520, 86280, 91313, 172560, 182626, 273939, 365252, 456565, 547878, 730504, 913130, 1095756, 1369695, 1461008, 1826260, 2191512, 2739390, 3652520, 4383024, 5478780, 7305040, 10957560, 21915120]

約数ペア:

[(1, 21915120), (2, 10957560), (3, 7305040), (4, 5478780), (5, 4383024), (6, 3652520), (8, 2739390), (10, 2191512), (12, 1826260), (15, 1461008), (16, 1369695), (20, 1095756), (24, 913130), (30, 730504), (40, 547878), (48, 456565), (60, 365252), (80, 273939), (120, 182626), (127, 172560), (240, 91313), (254, 86280), (381, 57520), (508, 43140), (635, 34512), (719, 30480), (762, 28760), (1016, 21570), (1270, 17256), (1438, 15240), (1524, 14380), (1905, 11504), (2032, 10785), (2157, 10160), (2540, 8628), (2876, 7620), (3048, 7190), (3595, 6096), (3810, 5752), (4314, 5080)]