20804985375

素因数分解:

$3^1\times 5^3\times {\mathrm{191}}^1\times {\mathrm{290471}}^1$

素因数の和:290680

約数の個数: 32

約数和(自身を含む): 34800869376

約数和(自身を除く): 13995884001

約数列:

[1, 3, 5, 15, 25, 75, 125, 191, 375, 573, 955, 2865, 4775, 14325, 23875, 71625, 290471, 871413, 1452355, 4357065, 7261775, 21785325, 36308875, 55479961, 108926625, 166439883, 277399805, 832199415, 1386999025, 4160997075, 6934995125, 20804985375]

約数ペア:

[(1, 20804985375), (3, 6934995125), (5, 4160997075), (15, 1386999025), (25, 832199415), (75, 277399805), (125, 166439883), (191, 108926625), (375, 55479961), (573, 36308875), (955, 21785325), (2865, 7261775), (4775, 4357065), (14325, 1452355), (23875, 871413), (71625, 290471)]