20325897

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{509}}^1$

素因数の和:567

約数の個数: 40

約数和(自身を含む): 33323400

約数和(自身を除く): 12997503

約数列:

[1, 3, 9, 17, 27, 29, 51, 81, 87, 153, 261, 459, 493, 509, 783, 1377, 1479, 1527, 2349, 4437, 4581, 8653, 13311, 13743, 14761, 25959, 39933, 41229, 44283, 77877, 132849, 233631, 250937, 398547, 700893, 752811, 1195641, 2258433, 6775299, 20325897]

約数ペア:

[(1, 20325897), (3, 6775299), (9, 2258433), (17, 1195641), (27, 752811), (29, 700893), (51, 398547), (81, 250937), (87, 233631), (153, 132849), (261, 77877), (459, 44283), (493, 41229), (509, 39933), (783, 25959), (1377, 14761), (1479, 13743), (1527, 13311), (2349, 8653), (4437, 4581)]