21937760

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:280

約数の個数: 96

約数和(自身を含む): 57153600

約数和(自身を除く): 35215840

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 53, 65, 80, 104, 106, 130, 160, 199, 208, 212, 260, 265, 398, 416, 424, 520, 530, 689, 796, 848, 995, 1040, 1060, 1378, 1592, 1696, 1990, 2080, 2120, 2587, 2756, 3184, 3445, 3980, 4240, 5174, 5512, 6368, 6890, 7960, 8480, 10348, 10547, 11024, 12935, 13780, 15920, 20696, 21094, 22048, 25870, 27560, 31840, 41392, 42188, 51740, 52735, 55120, 82784, 84376, 103480, 105470, 110240, 137111, 168752, 206960, 210940, 274222, 337504, 413920, 421880, 548444, 685555, 843760, 1096888, 1371110, 1687520, 2193776, 2742220, 4387552, 5484440, 10968880, 21937760]

約数ペア:

[(1, 21937760), (2, 10968880), (4, 5484440), (5, 4387552), (8, 2742220), (10, 2193776), (13, 1687520), (16, 1371110), (20, 1096888), (26, 843760), (32, 685555), (40, 548444), (52, 421880), (53, 413920), (65, 337504), (80, 274222), (104, 210940), (106, 206960), (130, 168752), (160, 137111), (199, 110240), (208, 105470), (212, 103480), (260, 84376), (265, 82784), (398, 55120), (416, 52735), (424, 51740), (520, 42188), (530, 41392), (689, 31840), (796, 27560), (848, 25870), (995, 22048), (1040, 21094), (1060, 20696), (1378, 15920), (1592, 13780), (1696, 12935), (1990, 11024), (2080, 10547), (2120, 10348), (2587, 8480), (2756, 7960), (3184, 6890), (3445, 6368), (3980, 5512), (4240, 5174)]