21072705

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{193}}^1\times {\mathrm{251}}^1$

素因数の和:481

約数の個数: 32

約数和(自身を含む): 35199360

約数和(自身を除く): 14126655

約数列:

[1, 3, 5, 15, 29, 87, 145, 193, 251, 435, 579, 753, 965, 1255, 2895, 3765, 5597, 7279, 16791, 21837, 27985, 36395, 48443, 83955, 109185, 145329, 242215, 726645, 1404847, 4214541, 7024235, 21072705]

約数ペア:

[(1, 21072705), (3, 7024235), (5, 4214541), (15, 1404847), (29, 726645), (87, 242215), (145, 145329), (193, 109185), (251, 83955), (435, 48443), (579, 36395), (753, 27985), (965, 21837), (1255, 16791), (2895, 7279), (3765, 5597)]