20616375

素因数分解:

$3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{4229}}^1$

素因数の和:4260

約数の個数: 32

約数和(自身を含む): 36953280

約数和(自身を除く): 16336905

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 125, 195, 325, 375, 975, 1625, 4229, 4875, 12687, 21145, 54977, 63435, 105725, 164931, 274885, 317175, 528625, 824655, 1374425, 1585875, 4123275, 6872125, 20616375]

約数ペア:

[(1, 20616375), (3, 6872125), (5, 4123275), (13, 1585875), (15, 1374425), (25, 824655), (39, 528625), (65, 317175), (75, 274885), (125, 164931), (195, 105725), (325, 63435), (375, 54977), (975, 21145), (1625, 12687), (4229, 4875)]