28173880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{100621}}^1$

素因数の和:100639

約数の個数: 32

約数和(自身を含む): 72447840

約数和(自身を除く): 44273960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 100621, 201242, 402484, 503105, 704347, 804968, 1006210, 1408694, 2012420, 2817388, 3521735, 4024840, 5634776, 7043470, 14086940, 28173880]

約数ペア:

[(1, 28173880), (2, 14086940), (4, 7043470), (5, 5634776), (7, 4024840), (8, 3521735), (10, 2817388), (14, 2012420), (20, 1408694), (28, 1006210), (35, 804968), (40, 704347), (56, 503105), (70, 402484), (140, 201242), (280, 100621)]