28891700

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{6719}}^1$

素因数の和:6776

約数の個数: 36

約数和(自身を含む): 64162560

約数和(自身を除く): 35270860

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 6719, 13438, 26876, 33595, 67190, 134380, 167975, 288917, 335950, 577834, 671900, 1155668, 1444585, 2889170, 5778340, 7222925, 14445850, 28891700]

約数ペア:

[(1, 28891700), (2, 14445850), (4, 7222925), (5, 5778340), (10, 2889170), (20, 1444585), (25, 1155668), (43, 671900), (50, 577834), (86, 335950), (100, 288917), (172, 167975), (215, 134380), (430, 67190), (860, 33595), (1075, 26876), (2150, 13438), (4300, 6719)]