21791884

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:206

約数の個数: 48

約数和(自身を含む): 41552896

約数和(自身を除く): 19761012

約数列:

[1, 2, 4, 31, 43, 61, 62, 67, 86, 122, 124, 134, 172, 244, 268, 1333, 1891, 2077, 2623, 2666, 2881, 3782, 4087, 4154, 5246, 5332, 5762, 7564, 8174, 8308, 10492, 11524, 16348, 81313, 89311, 126697, 162626, 175741, 178622, 253394, 325252, 351482, 357244, 506788, 702964, 5447971, 10895942, 21791884]

約数ペア:

[(1, 21791884), (2, 10895942), (4, 5447971), (31, 702964), (43, 506788), (61, 357244), (62, 351482), (67, 325252), (86, 253394), (122, 178622), (124, 175741), (134, 162626), (172, 126697), (244, 89311), (268, 81313), (1333, 16348), (1891, 11524), (2077, 10492), (2623, 8308), (2666, 8174), (2881, 7564), (3782, 5762), (4087, 5332), (4154, 5246)]