28901780

素因数分解:

$2^2\times 5^1\times {\mathrm{653}}^1\times {\mathrm{2213}}^1$

素因数の和:2875

約数の個数: 24

約数和(自身を含む): 60814152

約数和(自身を除く): 31912372

約数列:

[1, 2, 4, 5, 10, 20, 653, 1306, 2213, 2612, 3265, 4426, 6530, 8852, 11065, 13060, 22130, 44260, 1445089, 2890178, 5780356, 7225445, 14450890, 28901780]

約数ペア:

[(1, 28901780), (2, 14450890), (4, 7225445), (5, 5780356), (10, 2890178), (20, 1445089), (653, 44260), (1306, 22130), (2213, 13060), (2612, 11065), (3265, 8852), (4426, 6530)]