16205625

素因数分解:

$3^2\times 5^4\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:136

約数の個数: 60

約数和(自身を含む): 30377776

約数和(自身を除く): 14172151

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 67, 75, 125, 129, 201, 215, 225, 335, 375, 387, 603, 625, 645, 1005, 1075, 1125, 1675, 1875, 1935, 2881, 3015, 3225, 5025, 5375, 5625, 8375, 8643, 9675, 14405, 15075, 16125, 25125, 25929, 26875, 41875, 43215, 48375, 72025, 75375, 80625, 125625, 129645, 216075, 241875, 360125, 376875, 648225, 1080375, 1800625, 3241125, 5401875, 16205625]

約数ペア:

[(1, 16205625), (3, 5401875), (5, 3241125), (9, 1800625), (15, 1080375), (25, 648225), (43, 376875), (45, 360125), (67, 241875), (75, 216075), (125, 129645), (129, 125625), (201, 80625), (215, 75375), (225, 72025), (335, 48375), (375, 43215), (387, 41875), (603, 26875), (625, 25929), (645, 25125), (1005, 16125), (1075, 15075), (1125, 14405), (1675, 9675), (1875, 8643), (1935, 8375), (2881, 5625), (3015, 5375), (3225, 5025)]