13262840

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1321}}^1$

素因数の和:1583

約数の個数: 32

約数和(自身を含む): 29982960

約数和(自身を除く): 16720120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 1321, 2008, 2510, 2642, 5020, 5284, 6605, 10040, 10568, 13210, 26420, 52840, 331571, 663142, 1326284, 1657855, 2652568, 3315710, 6631420, 13262840]

約数ペア:

[(1, 13262840), (2, 6631420), (4, 3315710), (5, 2652568), (8, 1657855), (10, 1326284), (20, 663142), (40, 331571), (251, 52840), (502, 26420), (1004, 13210), (1255, 10568), (1321, 10040), (2008, 6605), (2510, 5284), (2642, 5020)]