20964315

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4327}}^1$

素因数の和:4371

約数の個数: 32

約数和(自身を含む): 37393920

約数和(自身を除く): 16429605

約数列:

[1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615, 4327, 4845, 12981, 21635, 64905, 73559, 82213, 220677, 246639, 367795, 411065, 1103385, 1233195, 1397621, 4192863, 6988105, 20964315]

約数ペア:

[(1, 20964315), (3, 6988105), (5, 4192863), (15, 1397621), (17, 1233195), (19, 1103385), (51, 411065), (57, 367795), (85, 246639), (95, 220677), (255, 82213), (285, 73559), (323, 64905), (969, 21635), (1615, 12981), (4327, 4845)]