21616065

素因数分解:

$3^5\times 5^1\times {\mathrm{17791}}^1$

素因数の和:17811

約数の個数: 24

約数和(自身を含む): 38857728

約数和(自身を除く): 17241663

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17791, 53373, 88955, 160119, 266865, 480357, 800595, 1441071, 2401785, 4323213, 7205355, 21616065]

約数ペア:

[(1, 21616065), (3, 7205355), (5, 4323213), (9, 2401785), (15, 1441071), (27, 800595), (45, 480357), (81, 266865), (135, 160119), (243, 88955), (405, 53373), (1215, 17791)]