19686320

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{4643}}^1$

素因数の和:4709

約数の個数: 40

約数和(自身を含む): 46644336

約数和(自身を除く): 26958016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 4643, 9286, 18572, 23215, 37144, 46430, 74288, 92860, 185720, 246079, 371440, 492158, 984316, 1230395, 1968632, 2460790, 3937264, 4921580, 9843160, 19686320]

約数ペア:

[(1, 19686320), (2, 9843160), (4, 4921580), (5, 3937264), (8, 2460790), (10, 1968632), (16, 1230395), (20, 984316), (40, 492158), (53, 371440), (80, 246079), (106, 185720), (212, 92860), (265, 74288), (424, 46430), (530, 37144), (848, 23215), (1060, 18572), (2120, 9286), (4240, 4643)]