20101940

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{16477}}^1$

素因数の和:16547

約数の個数: 24

約数和(自身を含む): 42908712

約数和(自身を除く): 22806772

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 16477, 32954, 65908, 82385, 164770, 329540, 1005097, 2010194, 4020388, 5025485, 10050970, 20101940]

約数ペア:

[(1, 20101940), (2, 10050970), (4, 5025485), (5, 4020388), (10, 2010194), (20, 1005097), (61, 329540), (122, 164770), (244, 82385), (305, 65908), (610, 32954), (1220, 16477)]