129809860

素因数分解:

$2^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{13007}}^1$

素因数の和:13515

約数の個数: 24

約数和(自身を含む): 273168000

約数和(自身を除く): 143358140

約数列:

[1, 2, 4, 5, 10, 20, 499, 998, 1996, 2495, 4990, 9980, 13007, 26014, 52028, 65035, 130070, 260140, 6490493, 12980986, 25961972, 32452465, 64904930, 129809860]

約数ペア:

[(1, 129809860), (2, 64904930), (4, 32452465), (5, 25961972), (10, 12980986), (20, 6490493), (499, 260140), (998, 130070), (1996, 65035), (2495, 52028), (4990, 26014), (9980, 13007)]