18520125

素因数分解:

$3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1$

素因数の和:191

約数の個数: 64

約数和(自身を含む): 34594560

約数和(自身を除く): 16074435

約数列:

[1, 3, 5, 13, 15, 25, 29, 39, 65, 75, 87, 125, 131, 145, 195, 325, 375, 377, 393, 435, 655, 725, 975, 1131, 1625, 1703, 1885, 1965, 2175, 3275, 3625, 3799, 4875, 5109, 5655, 8515, 9425, 9825, 10875, 11397, 16375, 18995, 25545, 28275, 42575, 47125, 49125, 49387, 56985, 94975, 127725, 141375, 148161, 212875, 246935, 284925, 474875, 638625, 740805, 1234675, 1424625, 3704025, 6173375, 18520125]

約数ペア:

[(1, 18520125), (3, 6173375), (5, 3704025), (13, 1424625), (15, 1234675), (25, 740805), (29, 638625), (39, 474875), (65, 284925), (75, 246935), (87, 212875), (125, 148161), (131, 141375), (145, 127725), (195, 94975), (325, 56985), (375, 49387), (377, 49125), (393, 47125), (435, 42575), (655, 28275), (725, 25545), (975, 18995), (1131, 16375), (1625, 11397), (1703, 10875), (1885, 9825), (1965, 9425), (2175, 8515), (3275, 5655), (3625, 5109), (3799, 4875)]