20921990

素因数分解:

$2^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{35461}}^1$

素因数の和:35527

約数の個数: 16

約数和(自身を含む): 38298960

約数和(自身を除く): 17376970

約数列:

[1, 2, 5, 10, 59, 118, 295, 590, 35461, 70922, 177305, 354610, 2092199, 4184398, 10460995, 20921990]

約数ペア:

[(1, 20921990), (2, 10460995), (5, 4184398), (10, 2092199), (59, 354610), (118, 177305), (295, 70922), (590, 35461)]