21003825

素因数分解:

$3^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{4591}}^1$

素因数の和:4665

約数の個数: 24

約数和(自身を含む): 35303296

約数和(自身を除く): 14299471

約数列:

[1, 3, 5, 15, 25, 61, 75, 183, 305, 915, 1525, 4575, 4591, 13773, 22955, 68865, 114775, 280051, 344325, 840153, 1400255, 4200765, 7001275, 21003825]

約数ペア:

[(1, 21003825), (3, 7001275), (5, 4200765), (15, 1400255), (25, 840153), (61, 344325), (75, 280051), (183, 114775), (305, 68865), (915, 22955), (1525, 13773), (4575, 4591)]