20909989725

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{1549}}^1\times {\mathrm{9473}}^1$

素因数の和:11054

約数の個数: 48

約数和(自身を含む): 36418056000

約数和(自身を除く): 15508066275

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 475, 1425, 1549, 4647, 7745, 9473, 23235, 28419, 29431, 38725, 47365, 88293, 116175, 142095, 147155, 179987, 236825, 441465, 539961, 710475, 735775, 899935, 2207325, 2699805, 4499675, 13499025, 14673677, 44021031, 73368385, 220105155, 278799863, 366841925, 836399589, 1100525775, 1393999315, 4181997945, 6969996575, 20909989725]

約数ペア:

[(1, 20909989725), (3, 6969996575), (5, 4181997945), (15, 1393999315), (19, 1100525775), (25, 836399589), (57, 366841925), (75, 278799863), (95, 220105155), (285, 73368385), (475, 44021031), (1425, 14673677), (1549, 13499025), (4647, 4499675), (7745, 2699805), (9473, 2207325), (23235, 899935), (28419, 735775), (29431, 710475), (38725, 539961), (47365, 441465), (88293, 236825), (116175, 179987), (142095, 147155)]