21511737

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{659}}^1$

素因数の和:715

約数の個数: 40

約数和(自身を含む): 35777280

約数和(自身を除く): 14265543

約数列:

[1, 3, 9, 13, 27, 31, 39, 81, 93, 117, 279, 351, 403, 659, 837, 1053, 1209, 1977, 2511, 3627, 5931, 8567, 10881, 17793, 20429, 25701, 32643, 53379, 61287, 77103, 183861, 231309, 265577, 551583, 693927, 796731, 1654749, 2390193, 7170579, 21511737]

約数ペア:

[(1, 21511737), (3, 7170579), (9, 2390193), (13, 1654749), (27, 796731), (31, 693927), (39, 551583), (81, 265577), (93, 231309), (117, 183861), (279, 77103), (351, 61287), (403, 53379), (659, 32643), (837, 25701), (1053, 20429), (1209, 17793), (1977, 10881), (2511, 8567), (3627, 5931)]