20413515

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^3\times {\mathrm{277}}^1$

素因数の和:336

約数の個数: 32

約数和(自身を含む): 34827840

約数和(自身を除く): 14414325

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 277, 289, 831, 867, 1385, 1445, 4155, 4335, 4709, 4913, 14127, 14739, 23545, 24565, 70635, 73695, 80053, 240159, 400265, 1200795, 1360901, 4082703, 6804505, 20413515]

約数ペア:

[(1, 20413515), (3, 6804505), (5, 4082703), (15, 1360901), (17, 1200795), (51, 400265), (85, 240159), (255, 80053), (277, 73695), (289, 70635), (831, 24565), (867, 23545), (1385, 14739), (1445, 14127), (4155, 4913), (4335, 4709)]