21530145

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15773}}^1$

素因数の和:15801

約数の個数: 32

約数和(自身を含む): 42400512

約数和(自身を除く): 20870367

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 195, 273, 455, 1365, 15773, 47319, 78865, 110411, 205049, 236595, 331233, 552055, 615147, 1025245, 1435343, 1656165, 3075735, 4306029, 7176715, 21530145]

約数ペア:

[(1, 21530145), (3, 7176715), (5, 4306029), (7, 3075735), (13, 1656165), (15, 1435343), (21, 1025245), (35, 615147), (39, 552055), (65, 331233), (91, 236595), (105, 205049), (195, 110411), (273, 78865), (455, 47319), (1365, 15773)]