21195276

素因数分解:

$2^2\times 3^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 50709120

約数和(自身を除く): 29513844

約数列:

[1, 2, 3, 4, 6, 12, 97, 131, 139, 194, 262, 278, 291, 388, 393, 417, 524, 556, 582, 786, 834, 1164, 1572, 1668, 12707, 13483, 18209, 25414, 26966, 36418, 38121, 40449, 50828, 53932, 54627, 72836, 76242, 80898, 109254, 152484, 161796, 218508, 1766273, 3532546, 5298819, 7065092, 10597638, 21195276]

約数ペア:

[(1, 21195276), (2, 10597638), (3, 7065092), (4, 5298819), (6, 3532546), (12, 1766273), (97, 218508), (131, 161796), (139, 152484), (194, 109254), (262, 80898), (278, 76242), (291, 72836), (388, 54627), (393, 53932), (417, 50828), (524, 40449), (556, 38121), (582, 36418), (786, 26966), (834, 25414), (1164, 18209), (1572, 13483), (1668, 12707)]