21680775

素因数分解:

$3^2\times 5^2\times {\mathrm{167}}^1\times {\mathrm{577}}^1$

素因数の和:760

約数の個数: 36

約数和(自身を含む): 39132912

約数和(自身を除く): 17452137

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 167, 225, 501, 577, 835, 1503, 1731, 2505, 2885, 4175, 5193, 7515, 8655, 12525, 14425, 25965, 37575, 43275, 96359, 129825, 289077, 481795, 867231, 1445385, 2408975, 4336155, 7226925, 21680775]

約数ペア:

[(1, 21680775), (3, 7226925), (5, 4336155), (9, 2408975), (15, 1445385), (25, 867231), (45, 481795), (75, 289077), (167, 129825), (225, 96359), (501, 43275), (577, 37575), (835, 25965), (1503, 14425), (1731, 12525), (2505, 8655), (2885, 7515), (4175, 5193)]