19687910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{307}}^1$

素因数の和:389

約数の個数: 48

約数和(自身を含む): 39817008

約数和(自身を除く): 20129098

約数列:

[1, 2, 5, 10, 11, 22, 53, 55, 106, 110, 121, 242, 265, 307, 530, 583, 605, 614, 1166, 1210, 1535, 2915, 3070, 3377, 5830, 6413, 6754, 12826, 16271, 16885, 32065, 32542, 33770, 37147, 64130, 74294, 81355, 162710, 178981, 185735, 357962, 371470, 894905, 1789810, 1968791, 3937582, 9843955, 19687910]

約数ペア:

[(1, 19687910), (2, 9843955), (5, 3937582), (10, 1968791), (11, 1789810), (22, 894905), (53, 371470), (55, 357962), (106, 185735), (110, 178981), (121, 162710), (242, 81355), (265, 74294), (307, 64130), (530, 37147), (583, 33770), (605, 32542), (614, 32065), (1166, 16885), (1210, 16271), (1535, 12826), (2915, 6754), (3070, 6413), (3377, 5830)]