169580

素因数分解:

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

素因数の和:209

約数の個数: 24

約数和(自身を含む): 364560

約数和(自身を除く): 194980

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 139, 244, 278, 305, 556, 610, 695, 1220, 1390, 2780, 8479, 16958, 33916, 42395, 84790, 169580]

約数ペア:

[(1, 169580), (2, 84790), (4, 42395), (5, 33916), (10, 16958), (20, 8479), (61, 2780), (122, 1390), (139, 1220), (244, 695), (278, 610), (305, 556)]