21303930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:279

約数の個数: 64

約数和(自身を含む): 52876800

約数和(自身を除く): 31572870

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 79, 89, 101, 158, 178, 202, 237, 267, 303, 395, 445, 474, 505, 534, 606, 790, 890, 1010, 1185, 1335, 1515, 2370, 2670, 3030, 7031, 7979, 8989, 14062, 15958, 17978, 21093, 23937, 26967, 35155, 39895, 42186, 44945, 47874, 53934, 70310, 79790, 89890, 105465, 119685, 134835, 210930, 239370, 269670, 710131, 1420262, 2130393, 3550655, 4260786, 7101310, 10651965, 21303930]

約数ペア:

[(1, 21303930), (2, 10651965), (3, 7101310), (5, 4260786), (6, 3550655), (10, 2130393), (15, 1420262), (30, 710131), (79, 269670), (89, 239370), (101, 210930), (158, 134835), (178, 119685), (202, 105465), (237, 89890), (267, 79790), (303, 70310), (395, 53934), (445, 47874), (474, 44945), (505, 42186), (534, 39895), (606, 35155), (790, 26967), (890, 23937), (1010, 21093), (1185, 17978), (1335, 15958), (1515, 14062), (2370, 8989), (2670, 7979), (3030, 7031)]