28212980

素因数分解:

$2^2\times 5^1\times {\mathrm{167}}^1\times {\mathrm{8447}}^1$

素因数の和:8623

約数の個数: 24

約数和(自身を含む): 59609088

約数和(自身を除く): 31396108

約数列:

[1, 2, 4, 5, 10, 20, 167, 334, 668, 835, 1670, 3340, 8447, 16894, 33788, 42235, 84470, 168940, 1410649, 2821298, 5642596, 7053245, 14106490, 28212980]

約数ペア:

[(1, 28212980), (2, 14106490), (4, 7053245), (5, 5642596), (10, 2821298), (20, 1410649), (167, 168940), (334, 84470), (668, 42235), (835, 33788), (1670, 16894), (3340, 8447)]