21092920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31019}}^1$

素因数の和:31047

約数の個数: 32

約数和(自身を含む): 50252400

約数和(自身を除く): 29159480

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 31019, 62038, 124076, 155095, 248152, 310190, 527323, 620380, 1054646, 1240760, 2109292, 2636615, 4218584, 5273230, 10546460, 21092920]

約数ペア:

[(1, 21092920), (2, 10546460), (4, 5273230), (5, 4218584), (8, 2636615), (10, 2109292), (17, 1240760), (20, 1054646), (34, 620380), (40, 527323), (68, 310190), (85, 248152), (136, 155095), (170, 124076), (340, 62038), (680, 31019)]