66740440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{128347}}^1$

素因数の和:128371

約数の個数: 32

約数和(自身を含む): 161718480

約数和(自身を除く): 94978040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 128347, 256694, 513388, 641735, 1026776, 1283470, 1668511, 2566940, 3337022, 5133880, 6674044, 8342555, 13348088, 16685110, 33370220, 66740440]

約数ペア:

[(1, 66740440), (2, 33370220), (4, 16685110), (5, 13348088), (8, 8342555), (10, 6674044), (13, 5133880), (20, 3337022), (26, 2566940), (40, 1668511), (52, 1283470), (65, 1026776), (104, 641735), (130, 513388), (260, 256694), (520, 128347)]