19953075

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{269}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 35354880

約数和(自身を除く): 15401805

約数列:

[1, 3, 5, 15, 23, 25, 43, 69, 75, 115, 129, 215, 269, 345, 575, 645, 807, 989, 1075, 1345, 1725, 2967, 3225, 4035, 4945, 6187, 6725, 11567, 14835, 18561, 20175, 24725, 30935, 34701, 57835, 74175, 92805, 154675, 173505, 266041, 289175, 464025, 798123, 867525, 1330205, 3990615, 6651025, 19953075]

約数ペア:

[(1, 19953075), (3, 6651025), (5, 3990615), (15, 1330205), (23, 867525), (25, 798123), (43, 464025), (69, 289175), (75, 266041), (115, 173505), (129, 154675), (215, 92805), (269, 74175), (345, 57835), (575, 34701), (645, 30935), (807, 24725), (989, 20175), (1075, 18561), (1345, 14835), (1725, 11567), (2967, 6725), (3225, 6187), (4035, 4945)]