145880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{521}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 375840

約数和(自身を除く): 229960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 521, 1042, 2084, 2605, 3647, 4168, 5210, 7294, 10420, 14588, 18235, 20840, 29176, 36470, 72940, 145880]

約数ペア:

[(1, 145880), (2, 72940), (4, 36470), (5, 29176), (7, 20840), (8, 18235), (10, 14588), (14, 10420), (20, 7294), (28, 5210), (35, 4168), (40, 3647), (56, 2605), (70, 2084), (140, 1042), (280, 521)]