21423315

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2897}}^1$

素因数の和:2951

約数の個数: 32

約数和(自身を含む): 37558080

約数和(自身を除く): 16134765

約数列:

[1, 3, 5, 15, 17, 29, 51, 85, 87, 145, 255, 435, 493, 1479, 2465, 2897, 7395, 8691, 14485, 43455, 49249, 84013, 147747, 246245, 252039, 420065, 738735, 1260195, 1428221, 4284663, 7141105, 21423315]

約数ペア:

[(1, 21423315), (3, 7141105), (5, 4284663), (15, 1428221), (17, 1260195), (29, 738735), (51, 420065), (85, 252039), (87, 246245), (145, 147747), (255, 84013), (435, 49249), (493, 43455), (1479, 14485), (2465, 8691), (2897, 7395)]