28118775

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{8719}}^1$

素因数の和:8775

約数の個数: 24

約数和(自身を含む): 47576320

約数和(自身を除く): 19457545

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 3225, 8719, 26157, 43595, 130785, 217975, 374917, 653925, 1124751, 1874585, 5623755, 9372925, 28118775]

約数ペア:

[(1, 28118775), (3, 9372925), (5, 5623755), (15, 1874585), (25, 1124751), (43, 653925), (75, 374917), (129, 217975), (215, 130785), (645, 43595), (1075, 26157), (3225, 8719)]