21861580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1789}}^1$

素因数の和:1858

約数の個数: 48

約数和(自身を含む): 50520960

約数和(自身を除く): 28659380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 130, 188, 235, 260, 470, 611, 940, 1222, 1789, 2444, 3055, 3578, 6110, 7156, 8945, 12220, 17890, 23257, 35780, 46514, 84083, 93028, 116285, 168166, 232570, 336332, 420415, 465140, 840830, 1093079, 1681660, 2186158, 4372316, 5465395, 10930790, 21861580]

約数ペア:

[(1, 21861580), (2, 10930790), (4, 5465395), (5, 4372316), (10, 2186158), (13, 1681660), (20, 1093079), (26, 840830), (47, 465140), (52, 420415), (65, 336332), (94, 232570), (130, 168166), (188, 116285), (235, 93028), (260, 84083), (470, 46514), (611, 35780), (940, 23257), (1222, 17890), (1789, 12220), (2444, 8945), (3055, 7156), (3578, 6110)]