21780574

素因数分解:

$2^1\times {\mathrm{19}}^2\times {\mathrm{97}}^1\times {\mathrm{311}}^1$

素因数の和:448

約数の個数: 24

約数和(自身を含む): 34948368

約数和(自身を除く): 13167794

約数列:

[1, 2, 19, 38, 97, 194, 311, 361, 622, 722, 1843, 3686, 5909, 11818, 30167, 35017, 60334, 70034, 112271, 224542, 573173, 1146346, 10890287, 21780574]

約数ペア:

[(1, 21780574), (2, 10890287), (19, 1146346), (38, 573173), (97, 224542), (194, 112271), (311, 70034), (361, 60334), (622, 35017), (722, 30167), (1843, 11818), (3686, 5909)]