13120040

素因数分解:

$2^3\times 5^1\times {\mathrm{241}}^1\times {\mathrm{1361}}^1$

素因数の和:1613

約数の個数: 32

約数和(自身を含む): 29664360

約数和(自身を除く): 16544320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 241, 482, 964, 1205, 1361, 1928, 2410, 2722, 4820, 5444, 6805, 9640, 10888, 13610, 27220, 54440, 328001, 656002, 1312004, 1640005, 2624008, 3280010, 6560020, 13120040]

約数ペア:

[(1, 13120040), (2, 6560020), (4, 3280010), (5, 2624008), (8, 1640005), (10, 1312004), (20, 656002), (40, 328001), (241, 54440), (482, 27220), (964, 13610), (1205, 10888), (1361, 9640), (1928, 6805), (2410, 5444), (2722, 4820)]