20870475

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{16369}}^1$

素因数の和:16399

約数の個数: 24

約数和(自身を含む): 36537840

約数和(自身を除く): 15667365

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 16369, 49107, 81845, 245535, 278273, 409225, 834819, 1227675, 1391365, 4174095, 6956825, 20870475]

約数ペア:

[(1, 20870475), (3, 6956825), (5, 4174095), (15, 1391365), (17, 1227675), (25, 834819), (51, 409225), (75, 278273), (85, 245535), (255, 81845), (425, 49107), (1275, 16369)]