21249039

素因数分解:

$3^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{6791}}^1$

素因数の和:6950

約数の個数: 16

約数和(自身を含む): 32601600

約数和(自身を除く): 11352561

約数列:

[1, 3, 7, 21, 149, 447, 1043, 3129, 6791, 20373, 47537, 142611, 1011859, 3035577, 7083013, 21249039]

約数ペア:

[(1, 21249039), (3, 7083013), (7, 3035577), (21, 1011859), (149, 142611), (447, 47537), (1043, 20373), (3129, 6791)]