19508025

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{263}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 34569216

約数和(自身を除く): 15061191

約数列:

[1, 3, 5, 15, 23, 25, 43, 69, 75, 115, 129, 215, 263, 345, 575, 645, 789, 989, 1075, 1315, 1725, 2967, 3225, 3945, 4945, 6049, 6575, 11309, 14835, 18147, 19725, 24725, 30245, 33927, 56545, 74175, 90735, 151225, 169635, 260107, 282725, 453675, 780321, 848175, 1300535, 3901605, 6502675, 19508025]

約数ペア:

[(1, 19508025), (3, 6502675), (5, 3901605), (15, 1300535), (23, 848175), (25, 780321), (43, 453675), (69, 282725), (75, 260107), (115, 169635), (129, 151225), (215, 90735), (263, 74175), (345, 56545), (575, 33927), (645, 30245), (789, 24725), (989, 19725), (1075, 18147), (1315, 14835), (1725, 11309), (2967, 6575), (3225, 6049), (3945, 4945)]