19719560

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10061}}^1$

素因数の和:10086

約数の個数: 48

約数和(自身を含む): 51618060

約数和(自身を除く): 31898500

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10061, 20122, 40244, 50305, 70427, 80488, 100610, 140854, 201220, 281708, 352135, 402440, 492989, 563416, 704270, 985978, 1408540, 1971956, 2464945, 2817080, 3943912, 4929890, 9859780, 19719560]

約数ペア:

[(1, 19719560), (2, 9859780), (4, 4929890), (5, 3943912), (7, 2817080), (8, 2464945), (10, 1971956), (14, 1408540), (20, 985978), (28, 704270), (35, 563416), (40, 492989), (49, 402440), (56, 352135), (70, 281708), (98, 201220), (140, 140854), (196, 100610), (245, 80488), (280, 70427), (392, 50305), (490, 40244), (980, 20122), (1960, 10061)]