128940875

素因数分解:

$5^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:237

約数の個数: 64

約数和(自身を含む): 197683200

約数和(自身を除く): 68742325

約数列:

[1, 5, 7, 23, 25, 35, 43, 115, 125, 149, 161, 175, 215, 301, 575, 745, 805, 875, 989, 1043, 1075, 1505, 2875, 3427, 3725, 4025, 4945, 5215, 5375, 6407, 6923, 7525, 17135, 18625, 20125, 23989, 24725, 26075, 32035, 34615, 37625, 44849, 85675, 119945, 123625, 130375, 147361, 160175, 173075, 224245, 428375, 599725, 736805, 800875, 865375, 1031527, 1121225, 2998625, 3684025, 5157635, 5606125, 18420125, 25788175, 128940875]

約数ペア:

[(1, 128940875), (5, 25788175), (7, 18420125), (23, 5606125), (25, 5157635), (35, 3684025), (43, 2998625), (115, 1121225), (125, 1031527), (149, 865375), (161, 800875), (175, 736805), (215, 599725), (301, 428375), (575, 224245), (745, 173075), (805, 160175), (875, 147361), (989, 130375), (1043, 123625), (1075, 119945), (1505, 85675), (2875, 44849), (3427, 37625), (3725, 34615), (4025, 32035), (4945, 26075), (5215, 24725), (5375, 23989), (6407, 20125), (6923, 18625), (7525, 17135)]