19935604

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{149}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 39513600

約数和(自身を除く): 19577996

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 83, 124, 149, 166, 298, 332, 403, 596, 806, 1079, 1612, 1937, 2158, 2573, 3874, 4316, 4619, 5146, 7748, 9238, 10292, 12367, 18476, 24734, 33449, 49468, 60047, 66898, 120094, 133796, 160771, 240188, 321542, 383377, 643084, 766754, 1533508, 4983901, 9967802, 19935604]

約数ペア:

[(1, 19935604), (2, 9967802), (4, 4983901), (13, 1533508), (26, 766754), (31, 643084), (52, 383377), (62, 321542), (83, 240188), (124, 160771), (149, 133796), (166, 120094), (298, 66898), (332, 60047), (403, 49468), (596, 33449), (806, 24734), (1079, 18476), (1612, 12367), (1937, 10292), (2158, 9238), (2573, 7748), (3874, 5146), (4316, 4619)]