1378125

素因数分解:

$3^2\times 5^5\times 7^2$

素因数の和:45

約数の個数: 54

約数和(自身を含む): 2894346

約数和(自身を除く): 1516221

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 49, 63, 75, 105, 125, 147, 175, 225, 245, 315, 375, 441, 525, 625, 735, 875, 1125, 1225, 1575, 1875, 2205, 2625, 3125, 3675, 4375, 5625, 6125, 7875, 9375, 11025, 13125, 18375, 21875, 28125, 30625, 39375, 55125, 65625, 91875, 153125, 196875, 275625, 459375, 1378125]

約数ペア:

[(1, 1378125), (3, 459375), (5, 275625), (7, 196875), (9, 153125), (15, 91875), (21, 65625), (25, 55125), (35, 39375), (45, 30625), (49, 28125), (63, 21875), (75, 18375), (105, 13125), (125, 11025), (147, 9375), (175, 7875), (225, 6125), (245, 5625), (315, 4375), (375, 3675), (441, 3125), (525, 2625), (625, 2205), (735, 1875), (875, 1575), (1125, 1225)]