21583275

素因数分解:

$3^1\times 5^2\times 7^3\times {\mathrm{839}}^1$

素因数の和:873

約数の個数: 48

約数和(自身を含む): 41664000

約数和(自身を除く): 20080725

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 147, 175, 245, 343, 525, 735, 839, 1029, 1225, 1715, 2517, 3675, 4195, 5145, 5873, 8575, 12585, 17619, 20975, 25725, 29365, 41111, 62925, 88095, 123333, 146825, 205555, 287777, 440475, 616665, 863331, 1027775, 1438885, 3083325, 4316655, 7194425, 21583275]

約数ペア:

[(1, 21583275), (3, 7194425), (5, 4316655), (7, 3083325), (15, 1438885), (21, 1027775), (25, 863331), (35, 616665), (49, 440475), (75, 287777), (105, 205555), (147, 146825), (175, 123333), (245, 88095), (343, 62925), (525, 41111), (735, 29365), (839, 25725), (1029, 20975), (1225, 17619), (1715, 12585), (2517, 8575), (3675, 5873), (4195, 5145)]