21213045

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{67343}}^1$

素因数の和:67361

約数の個数: 24

約数和(自身を含む): 42022656

約数和(自身を除く): 20809611

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 67343, 202029, 336715, 471401, 606087, 1010145, 1414203, 2357005, 3030435, 4242609, 7071015, 21213045]

約数ペア:

[(1, 21213045), (3, 7071015), (5, 4242609), (7, 3030435), (9, 2357005), (15, 1414203), (21, 1010145), (35, 606087), (45, 471401), (63, 336715), (105, 202029), (315, 67343)]