172802020

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{1019}}^1$

素因数の和:1228

約数の個数: 48

約数和(自身を含む): 371851200

約数和(自身を除く): 199049180

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 139, 244, 278, 305, 556, 610, 695, 1019, 1220, 1390, 2038, 2780, 4076, 5095, 8479, 10190, 16958, 20380, 33916, 42395, 62159, 84790, 124318, 141641, 169580, 248636, 283282, 310795, 566564, 621590, 708205, 1243180, 1416410, 2832820, 8640101, 17280202, 34560404, 43200505, 86401010, 172802020]

約数ペア:

[(1, 172802020), (2, 86401010), (4, 43200505), (5, 34560404), (10, 17280202), (20, 8640101), (61, 2832820), (122, 1416410), (139, 1243180), (244, 708205), (278, 621590), (305, 566564), (556, 310795), (610, 283282), (695, 248636), (1019, 169580), (1220, 141641), (1390, 124318), (2038, 84790), (2780, 62159), (4076, 42395), (5095, 33916), (8479, 20380), (10190, 16958)]