21088005

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1213}}^1$

素因数の和:1301

約数の個数: 32

約数和(自身を含む): 36128640

約数和(自身を除く): 15040635

約数列:

[1, 3, 5, 15, 19, 57, 61, 95, 183, 285, 305, 915, 1159, 1213, 3477, 3639, 5795, 6065, 17385, 18195, 23047, 69141, 73993, 115235, 221979, 345705, 369965, 1109895, 1405867, 4217601, 7029335, 21088005]

約数ペア:

[(1, 21088005), (3, 7029335), (5, 4217601), (15, 1405867), (19, 1109895), (57, 369965), (61, 345705), (95, 221979), (183, 115235), (285, 73993), (305, 69141), (915, 23047), (1159, 18195), (1213, 17385), (3477, 6065), (3639, 5795)]