21970004

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{677}}^1$

素因数の和:768

約数の個数: 48

約数和(自身を含む): 47080320

約数和(自身を除く): 25110316

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 61, 76, 122, 133, 244, 266, 427, 532, 677, 854, 1159, 1354, 1708, 2318, 2708, 4636, 4739, 8113, 9478, 12863, 16226, 18956, 25726, 32452, 41297, 51452, 82594, 90041, 165188, 180082, 289079, 360164, 578158, 784643, 1156316, 1569286, 3138572, 5492501, 10985002, 21970004]

約数ペア:

[(1, 21970004), (2, 10985002), (4, 5492501), (7, 3138572), (14, 1569286), (19, 1156316), (28, 784643), (38, 578158), (61, 360164), (76, 289079), (122, 180082), (133, 165188), (244, 90041), (266, 82594), (427, 51452), (532, 41297), (677, 32452), (854, 25726), (1159, 18956), (1354, 16226), (1708, 12863), (2318, 9478), (2708, 8113), (4636, 4739)]