28408821

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1\times {\mathrm{269}}^1$

素因数の和:433

約数の個数: 32

約数和(自身を含む): 44789760

約数和(自身を除く): 16380939

約数列:

[1, 3, 7, 21, 47, 107, 141, 269, 321, 329, 749, 807, 987, 1883, 2247, 5029, 5649, 12643, 15087, 28783, 35203, 37929, 86349, 88501, 105609, 201481, 265503, 604443, 1352801, 4058403, 9469607, 28408821]

約数ペア:

[(1, 28408821), (3, 9469607), (7, 4058403), (21, 1352801), (47, 604443), (107, 265503), (141, 201481), (269, 105609), (321, 88501), (329, 86349), (749, 37929), (807, 35203), (987, 28783), (1883, 15087), (2247, 12643), (5029, 5649)]