20875065

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1153}}^1$

素因数の和:1249

約数の個数: 32

約数和(自身を含む): 35894016

約数和(自身を除く): 15018951

約数列:

[1, 3, 5, 15, 17, 51, 71, 85, 213, 255, 355, 1065, 1153, 1207, 3459, 3621, 5765, 6035, 17295, 18105, 19601, 58803, 81863, 98005, 245589, 294015, 409315, 1227945, 1391671, 4175013, 6958355, 20875065]

約数ペア:

[(1, 20875065), (3, 6958355), (5, 4175013), (15, 1391671), (17, 1227945), (51, 409315), (71, 294015), (85, 245589), (213, 98005), (255, 81863), (355, 58803), (1065, 19601), (1153, 18105), (1207, 17295), (3459, 6035), (3621, 5765)]