128220625

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{367}}^1$

素因数の和:443

約数の個数: 40

約数和(自身を含む): 177043328

約数和(自身を除く): 48822703

約数列:

[1, 5, 13, 25, 43, 65, 125, 215, 325, 367, 559, 625, 1075, 1625, 1835, 2795, 4771, 5375, 8125, 9175, 13975, 15781, 23855, 26875, 45875, 69875, 78905, 119275, 205153, 229375, 349375, 394525, 596375, 1025765, 1972625, 2981875, 5128825, 9863125, 25644125, 128220625]

約数ペア:

[(1, 128220625), (5, 25644125), (13, 9863125), (25, 5128825), (43, 2981875), (65, 1972625), (125, 1025765), (215, 596375), (325, 394525), (367, 349375), (559, 229375), (625, 205153), (1075, 119275), (1625, 78905), (1835, 69875), (2795, 45875), (4771, 26875), (5375, 23855), (8125, 15781), (9175, 13975)]