20168205

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{569}}^1$

素因数の和:733

約数の個数: 32

約数和(自身を含む): 34473600

約数和(自身を除く): 14305395

約数列:

[1, 3, 5, 15, 17, 51, 85, 139, 255, 417, 569, 695, 1707, 2085, 2363, 2845, 7089, 8535, 9673, 11815, 29019, 35445, 48365, 79091, 145095, 237273, 395455, 1186365, 1344547, 4033641, 6722735, 20168205]

約数ペア:

[(1, 20168205), (3, 6722735), (5, 4033641), (15, 1344547), (17, 1186365), (51, 395455), (85, 237273), (139, 145095), (255, 79091), (417, 48365), (569, 35445), (695, 29019), (1707, 11815), (2085, 9673), (2363, 8535), (2845, 7089)]