28911940

素因数分解:

$2^2\times 5^1\times {\mathrm{839}}^1\times {\mathrm{1723}}^1$

素因数の和:2571

約数の個数: 24

約数和(自身を含む): 60822720

約数和(自身を除く): 31910780

約数列:

[1, 2, 4, 5, 10, 20, 839, 1678, 1723, 3356, 3446, 4195, 6892, 8390, 8615, 16780, 17230, 34460, 1445597, 2891194, 5782388, 7227985, 14455970, 28911940]

約数ペア:

[(1, 28911940), (2, 14455970), (4, 7227985), (5, 5782388), (10, 2891194), (20, 1445597), (839, 34460), (1678, 17230), (1723, 16780), (3356, 8615), (3446, 8390), (4195, 6892)]