21920625

素因数分解:

$3^4\times 5^4\times {\mathrm{433}}^1$

素因数の和:465

約数の個数: 50

約数和(自身を含む): 41013434

約数和(自身を除く): 19092809

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 125, 135, 225, 375, 405, 433, 625, 675, 1125, 1299, 1875, 2025, 2165, 3375, 3897, 5625, 6495, 10125, 10825, 11691, 16875, 19485, 32475, 35073, 50625, 54125, 58455, 97425, 162375, 175365, 270625, 292275, 487125, 811875, 876825, 1461375, 2435625, 4384125, 7306875, 21920625]

約数ペア:

[(1, 21920625), (3, 7306875), (5, 4384125), (9, 2435625), (15, 1461375), (25, 876825), (27, 811875), (45, 487125), (75, 292275), (81, 270625), (125, 175365), (135, 162375), (225, 97425), (375, 58455), (405, 54125), (433, 50625), (625, 35073), (675, 32475), (1125, 19485), (1299, 16875), (1875, 11691), (2025, 10825), (2165, 10125), (3375, 6495), (3897, 5625)]