21978610

素因数分解:

$2^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{101}}^1\times {\mathrm{463}}^1$

素因数の和:618

約数の個数: 32

約数和(自身を含む): 40891392

約数和(自身を除く): 18912782

約数列:

[1, 2, 5, 10, 47, 94, 101, 202, 235, 463, 470, 505, 926, 1010, 2315, 4630, 4747, 9494, 21761, 23735, 43522, 46763, 47470, 93526, 108805, 217610, 233815, 467630, 2197861, 4395722, 10989305, 21978610]

約数ペア:

[(1, 21978610), (2, 10989305), (5, 4395722), (10, 2197861), (47, 467630), (94, 233815), (101, 217610), (202, 108805), (235, 93526), (463, 47470), (470, 46763), (505, 43522), (926, 23735), (1010, 21761), (2315, 9494), (4630, 4747)]