21000434735

素因数分解:

$5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{1553}}^1\times {\mathrm{2593}}^1$

素因数の和:4307

約数の個数: 32

約数和(自身を含む): 29023747200

約数和(自身を除く): 8023312465

約数列:

[1, 5, 7, 35, 149, 745, 1043, 1553, 2593, 5215, 7765, 10871, 12965, 18151, 54355, 90755, 231397, 386357, 1156985, 1619779, 1931785, 2704499, 4026929, 8098895, 13522495, 20134645, 28188503, 140942515, 600012421, 3000062105, 4200086947, 21000434735]

約数ペア:

[(1, 21000434735), (5, 4200086947), (7, 3000062105), (35, 600012421), (149, 140942515), (745, 28188503), (1043, 20134645), (1553, 13522495), (2593, 8098895), (5215, 4026929), (7765, 2704499), (10871, 1931785), (12965, 1619779), (18151, 1156985), (54355, 386357), (90755, 231397)]