25990065

素因数分解:

$3^5\times 5^1\times {\mathrm{21391}}^1$

素因数の和:21411

約数の個数: 24

約数和(自身を含む): 46720128

約数和(自身を除く): 20730063

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 21391, 64173, 106955, 192519, 320865, 577557, 962595, 1732671, 2887785, 5198013, 8663355, 25990065]

約数ペア:

[(1, 25990065), (3, 8663355), (5, 5198013), (9, 2887785), (15, 1732671), (27, 962595), (45, 577557), (81, 320865), (135, 192519), (243, 106955), (405, 64173), (1215, 21391)]