21821992

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{373}}^1$

素因数の和:553

約数の個数: 32

約数和(自身を含む): 42007680

約数和(自身を除く): 20185688

約数列:

[1, 2, 4, 8, 71, 103, 142, 206, 284, 373, 412, 568, 746, 824, 1492, 2984, 7313, 14626, 26483, 29252, 38419, 52966, 58504, 76838, 105932, 153676, 211864, 307352, 2727749, 5455498, 10910996, 21821992]

約数ペア:

[(1, 21821992), (2, 10910996), (4, 5455498), (8, 2727749), (71, 307352), (103, 211864), (142, 153676), (206, 105932), (284, 76838), (373, 58504), (412, 52966), (568, 38419), (746, 29252), (824, 26483), (1492, 14626), (2984, 7313)]