7420005

素因数分解:

$3^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 13837824

約数和(自身を除く): 6417819

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 81, 93, 135, 155, 197, 243, 279, 405, 465, 591, 837, 985, 1215, 1395, 1773, 2511, 2955, 4185, 5319, 6107, 7533, 8865, 12555, 15957, 18321, 26595, 30535, 37665, 47871, 54963, 79785, 91605, 164889, 239355, 274815, 494667, 824445, 1484001, 2473335, 7420005]

約数ペア:

[(1, 7420005), (3, 2473335), (5, 1484001), (9, 824445), (15, 494667), (27, 274815), (31, 239355), (45, 164889), (81, 91605), (93, 79785), (135, 54963), (155, 47871), (197, 37665), (243, 30535), (279, 26595), (405, 18321), (465, 15957), (591, 12555), (837, 8865), (985, 7533), (1215, 6107), (1395, 5319), (1773, 4185), (2511, 2955)]