20699679

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1$

素因数の和:208

約数の個数: 64

約数和(自身を含む): 37997568

約数和(自身を除く): 17297889

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 61, 77, 91, 113, 143, 183, 231, 273, 339, 427, 429, 671, 791, 793, 1001, 1243, 1281, 1469, 2013, 2373, 2379, 3003, 3729, 4407, 4697, 5551, 6893, 8701, 8723, 10283, 14091, 16159, 16653, 20679, 26103, 26169, 30849, 48251, 48477, 61061, 75823, 89609, 113113, 144753, 183183, 227469, 268827, 339339, 530761, 627263, 985699, 1592283, 1881789, 2957097, 6899893, 20699679]

約数ペア:

[(1, 20699679), (3, 6899893), (7, 2957097), (11, 1881789), (13, 1592283), (21, 985699), (33, 627263), (39, 530761), (61, 339339), (77, 268827), (91, 227469), (113, 183183), (143, 144753), (183, 113113), (231, 89609), (273, 75823), (339, 61061), (427, 48477), (429, 48251), (671, 30849), (791, 26169), (793, 26103), (1001, 20679), (1243, 16653), (1281, 16159), (1469, 14091), (2013, 10283), (2373, 8723), (2379, 8701), (3003, 6893), (3729, 5551), (4407, 4697)]