21778088

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{2027}}^1$

素因数の和:2129

約数の個数: 32

約数和(自身を含む): 43804800

約数和(自身を除く): 22026712

約数列:

[1, 2, 4, 8, 17, 34, 68, 79, 136, 158, 316, 632, 1343, 2027, 2686, 4054, 5372, 8108, 10744, 16216, 34459, 68918, 137836, 160133, 275672, 320266, 640532, 1281064, 2722261, 5444522, 10889044, 21778088]

約数ペア:

[(1, 21778088), (2, 10889044), (4, 5444522), (8, 2722261), (17, 1281064), (34, 640532), (68, 320266), (79, 275672), (136, 160133), (158, 137836), (316, 68918), (632, 34459), (1343, 16216), (2027, 10744), (2686, 8108), (4054, 5372)]