21281210

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{1381}}^1$

素因数の和:1478

約数の個数: 32

約数和(自身を含む): 40597632

約数和(自身を除く): 19316422

約数列:

[1, 2, 5, 10, 23, 46, 67, 115, 134, 230, 335, 670, 1381, 1541, 2762, 3082, 6905, 7705, 13810, 15410, 31763, 63526, 92527, 158815, 185054, 317630, 462635, 925270, 2128121, 4256242, 10640605, 21281210]

約数ペア:

[(1, 21281210), (2, 10640605), (5, 4256242), (10, 2128121), (23, 925270), (46, 462635), (67, 317630), (115, 185054), (134, 158815), (230, 92527), (335, 63526), (670, 31763), (1381, 15410), (1541, 13810), (2762, 7705), (3082, 6905)]