21487005

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8377}}^1$

素因数の和:8410

約数の個数: 32

約数和(自身を含む): 40214400

約数和(自身を除く): 18727395

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 285, 513, 855, 2565, 8377, 25131, 41885, 75393, 125655, 159163, 226179, 376965, 477489, 795815, 1130895, 1432467, 2387445, 4297401, 7162335, 21487005]

約数ペア:

[(1, 21487005), (3, 7162335), (5, 4297401), (9, 2387445), (15, 1432467), (19, 1130895), (27, 795815), (45, 477489), (57, 376965), (95, 226179), (135, 159163), (171, 125655), (285, 75393), (513, 41885), (855, 25131), (2565, 8377)]