12920440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{24847}}^1$

素因数の和:24871

約数の個数: 32

約数和(自身を含む): 31308480

約数和(自身を除く): 18388040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 24847, 49694, 99388, 124235, 198776, 248470, 323011, 496940, 646022, 993880, 1292044, 1615055, 2584088, 3230110, 6460220, 12920440]

約数ペア:

[(1, 12920440), (2, 6460220), (4, 3230110), (5, 2584088), (8, 1615055), (10, 1292044), (13, 993880), (20, 646022), (26, 496940), (40, 323011), (52, 248470), (65, 198776), (104, 124235), (130, 99388), (260, 49694), (520, 24847)]