28670920

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{2789}}^1$

素因数の和:3057

約数の個数: 32

約数和(自身を含む): 64783800

約数和(自身を除く): 36112880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 2789, 5140, 5578, 10280, 11156, 13945, 22312, 27890, 55780, 111560, 716773, 1433546, 2867092, 3583865, 5734184, 7167730, 14335460, 28670920]

約数ペア:

[(1, 28670920), (2, 14335460), (4, 7167730), (5, 5734184), (8, 3583865), (10, 2867092), (20, 1433546), (40, 716773), (257, 111560), (514, 55780), (1028, 27890), (1285, 22312), (2056, 13945), (2570, 11156), (2789, 10280), (5140, 5578)]