21135410

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{643}}^1$

素因数の和:842

約数の個数: 32

約数和(自身を含む): 40340160

約数和(自身を除く): 19204750

約数列:

[1, 2, 5, 10, 19, 38, 95, 173, 190, 346, 643, 865, 1286, 1730, 3215, 3287, 6430, 6574, 12217, 16435, 24434, 32870, 61085, 111239, 122170, 222478, 556195, 1112390, 2113541, 4227082, 10567705, 21135410]

約数ペア:

[(1, 21135410), (2, 10567705), (5, 4227082), (10, 2113541), (19, 1112390), (38, 556195), (95, 222478), (173, 122170), (190, 111239), (346, 61085), (643, 32870), (865, 24434), (1286, 16435), (1730, 12217), (3215, 6574), (3287, 6430)]