199901875

素因数分解:

$5^4\times {\mathrm{227}}^1\times {\mathrm{1409}}^1$

素因数の和:1656

約数の個数: 20

約数和(自身を含む): 251075880

約数和(自身を除く): 51174005

約数列:

[1, 5, 25, 125, 227, 625, 1135, 1409, 5675, 7045, 28375, 35225, 141875, 176125, 319843, 880625, 1599215, 7996075, 39980375, 199901875]

約数ペア:

[(1, 199901875), (5, 39980375), (25, 7996075), (125, 1599215), (227, 880625), (625, 319843), (1135, 176125), (1409, 141875), (5675, 35225), (7045, 28375)]