21000657610

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{1286017}}^1$

素因数の和:1286118

約数の個数: 32

約数和(自身を含む): 40000303872

約数和(自身を除く): 18999646262

約数列:

[1, 2, 5, 10, 23, 46, 71, 115, 142, 230, 355, 710, 1633, 3266, 8165, 16330, 1286017, 2572034, 6430085, 12860170, 29578391, 59156782, 91307207, 147891955, 182614414, 295783910, 456536035, 913072070, 2100065761, 4200131522, 10500328805, 21000657610]

約数ペア:

[(1, 21000657610), (2, 10500328805), (5, 4200131522), (10, 2100065761), (23, 913072070), (46, 456536035), (71, 295783910), (115, 182614414), (142, 147891955), (230, 91307207), (355, 59156782), (710, 29578391), (1633, 12860170), (3266, 6430085), (8165, 2572034), (16330, 1286017)]