21110625

素因数分解:

$3^5\times 5^4\times {\mathrm{139}}^1$

素因数の和:174

約数の個数: 60

約数和(自身を含む): 39799760

約数和(自身を除く): 18689135

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 125, 135, 139, 225, 243, 375, 405, 417, 625, 675, 695, 1125, 1215, 1251, 1875, 2025, 2085, 3375, 3475, 3753, 5625, 6075, 6255, 10125, 10425, 11259, 16875, 17375, 18765, 30375, 31275, 33777, 50625, 52125, 56295, 86875, 93825, 151875, 156375, 168885, 260625, 281475, 469125, 781875, 844425, 1407375, 2345625, 4222125, 7036875, 21110625]

約数ペア:

[(1, 21110625), (3, 7036875), (5, 4222125), (9, 2345625), (15, 1407375), (25, 844425), (27, 781875), (45, 469125), (75, 281475), (81, 260625), (125, 168885), (135, 156375), (139, 151875), (225, 93825), (243, 86875), (375, 56295), (405, 52125), (417, 50625), (625, 33777), (675, 31275), (695, 30375), (1125, 18765), (1215, 17375), (1251, 16875), (1875, 11259), (2025, 10425), (2085, 10125), (3375, 6255), (3475, 6075), (3753, 5625)]