21090705840

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{370793}}^1$

素因数の和:370891

約数の個数: 120

約数和(自身を含む): 71726391360

約数和(自身を除く): 50635685520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 79, 80, 90, 120, 144, 158, 180, 237, 240, 316, 360, 395, 474, 632, 711, 720, 790, 948, 1185, 1264, 1422, 1580, 1896, 2370, 2844, 3160, 3555, 3792, 4740, 5688, 6320, 7110, 9480, 11376, 14220, 18960, 28440, 56880, 370793, 741586, 1112379, 1483172, 1853965, 2224758, 2966344, 3337137, 3707930, 4449516, 5561895, 5932688, 6674274, 7415860, 8899032, 11123790, 13348548, 14831720, 16685685, 17798064, 22247580, 26697096, 29292647, 29663440, 33371370, 44495160, 53394192, 58585294, 66742740, 87877941, 88990320, 117170588, 133485480, 146463235, 175755882, 234341176, 263633823, 266970960, 292926470, 351511764, 439389705, 468682352, 527267646, 585852940, 703023528, 878779410, 1054535292, 1171705880, 1318169115, 1406047056, 1757558820, 2109070584, 2343411760, 2636338230, 3515117640, 4218141168, 5272676460, 7030235280, 10545352920, 21090705840]

約数ペア:

[(1, 21090705840), (2, 10545352920), (3, 7030235280), (4, 5272676460), (5, 4218141168), (6, 3515117640), (8, 2636338230), (9, 2343411760), (10, 2109070584), (12, 1757558820), (15, 1406047056), (16, 1318169115), (18, 1171705880), (20, 1054535292), (24, 878779410), (30, 703023528), (36, 585852940), (40, 527267646), (45, 468682352), (48, 439389705), (60, 351511764), (72, 292926470), (79, 266970960), (80, 263633823), (90, 234341176), (120, 175755882), (144, 146463235), (158, 133485480), (180, 117170588), (237, 88990320), (240, 87877941), (316, 66742740), (360, 58585294), (395, 53394192), (474, 44495160), (632, 33371370), (711, 29663440), (720, 29292647), (790, 26697096), (948, 22247580), (1185, 17798064), (1264, 16685685), (1422, 14831720), (1580, 13348548), (1896, 11123790), (2370, 8899032), (2844, 7415860), (3160, 6674274), (3555, 5932688), (3792, 5561895), (4740, 4449516), (5688, 3707930), (6320, 3337137), (7110, 2966344), (9480, 2224758), (11376, 1853965), (14220, 1483172), (18960, 1112379), (28440, 741586), (56880, 370793)]