21957488

素因数分解:

$2^4\times 7^3\times {\mathrm{4001}}^1$

素因数の和:4030

約数の個数: 40

約数和(自身を含む): 49624800

約数和(自身を除く): 27667312

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 343, 392, 686, 784, 1372, 2744, 4001, 5488, 8002, 16004, 28007, 32008, 56014, 64016, 112028, 196049, 224056, 392098, 448112, 784196, 1372343, 1568392, 2744686, 3136784, 5489372, 10978744, 21957488]

約数ペア:

[(1, 21957488), (2, 10978744), (4, 5489372), (7, 3136784), (8, 2744686), (14, 1568392), (16, 1372343), (28, 784196), (49, 448112), (56, 392098), (98, 224056), (112, 196049), (196, 112028), (343, 64016), (392, 56014), (686, 32008), (784, 28007), (1372, 16004), (2744, 8002), (4001, 5488)]