21921990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31771}}^1$

素因数の和:31804

約数の個数: 32

約数和(自身を含む): 54902016

約数和(自身を除く): 32980026

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690, 31771, 63542, 95313, 158855, 190626, 317710, 476565, 730733, 953130, 1461466, 2192199, 3653665, 4384398, 7307330, 10960995, 21921990]

約数ペア:

[(1, 21921990), (2, 10960995), (3, 7307330), (5, 4384398), (6, 3653665), (10, 2192199), (15, 1461466), (23, 953130), (30, 730733), (46, 476565), (69, 317710), (115, 190626), (138, 158855), (230, 95313), (345, 63542), (690, 31771)]