20398125

素因数分解:

$3^1\times 5^4\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:100

約数の個数: 80

約数和(自身を含む): 39587328

約数和(自身を除く): 19189203

約数列:

[1, 3, 5, 11, 15, 23, 25, 33, 43, 55, 69, 75, 115, 125, 129, 165, 215, 253, 275, 345, 375, 473, 575, 625, 645, 759, 825, 989, 1075, 1265, 1375, 1419, 1725, 1875, 2365, 2875, 2967, 3225, 3795, 4125, 4945, 5375, 6325, 6875, 7095, 8625, 10879, 11825, 14375, 14835, 16125, 18975, 20625, 24725, 26875, 31625, 32637, 35475, 43125, 54395, 59125, 74175, 80625, 94875, 123625, 158125, 163185, 177375, 271975, 295625, 370875, 474375, 618125, 815925, 886875, 1359875, 1854375, 4079625, 6799375, 20398125]

約数ペア:

[(1, 20398125), (3, 6799375), (5, 4079625), (11, 1854375), (15, 1359875), (23, 886875), (25, 815925), (33, 618125), (43, 474375), (55, 370875), (69, 295625), (75, 271975), (115, 177375), (125, 163185), (129, 158125), (165, 123625), (215, 94875), (253, 80625), (275, 74175), (345, 59125), (375, 54395), (473, 43125), (575, 35475), (625, 32637), (645, 31625), (759, 26875), (825, 24725), (989, 20625), (1075, 18975), (1265, 16125), (1375, 14835), (1419, 14375), (1725, 11825), (1875, 10879), (2365, 8625), (2875, 7095), (2967, 6875), (3225, 6325), (3795, 5375), (4125, 4945)]