21310372005

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{113719}}^1$

素因数の和:113802

約数の個数: 48

約数和(自身を含む): 37942450560

約数和(自身を除く): 16632078555

約数列:

[1, 3, 5, 13, 15, 31, 39, 65, 93, 155, 195, 403, 465, 961, 1209, 2015, 2883, 4805, 6045, 12493, 14415, 37479, 62465, 113719, 187395, 341157, 568595, 1478347, 1705785, 3525289, 4435041, 7391735, 10575867, 17626445, 22175205, 45828757, 52879335, 109283959, 137486271, 229143785, 327851877, 546419795, 687431355, 1420691467, 1639259385, 4262074401, 7103457335, 21310372005]

約数ペア:

[(1, 21310372005), (3, 7103457335), (5, 4262074401), (13, 1639259385), (15, 1420691467), (31, 687431355), (39, 546419795), (65, 327851877), (93, 229143785), (155, 137486271), (195, 109283959), (403, 52879335), (465, 45828757), (961, 22175205), (1209, 17626445), (2015, 10575867), (2883, 7391735), (4805, 4435041), (6045, 3525289), (12493, 1705785), (14415, 1478347), (37479, 568595), (62465, 341157), (113719, 187395)]