20655850

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1279}}^1$

素因数の和:1327

約数の個数: 48

約数和(自身を含む): 42854400

約数和(自身を除く): 22198550

約数列:

[1, 2, 5, 10, 17, 19, 25, 34, 38, 50, 85, 95, 170, 190, 323, 425, 475, 646, 850, 950, 1279, 1615, 2558, 3230, 6395, 8075, 12790, 16150, 21743, 24301, 31975, 43486, 48602, 63950, 108715, 121505, 217430, 243010, 413117, 543575, 607525, 826234, 1087150, 1215050, 2065585, 4131170, 10327925, 20655850]

約数ペア:

[(1, 20655850), (2, 10327925), (5, 4131170), (10, 2065585), (17, 1215050), (19, 1087150), (25, 826234), (34, 607525), (38, 543575), (50, 413117), (85, 243010), (95, 217430), (170, 121505), (190, 108715), (323, 63950), (425, 48602), (475, 43486), (646, 31975), (850, 24301), (950, 21743), (1279, 16150), (1615, 12790), (2558, 8075), (3230, 6395)]