319999755

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{7993}}^1$

素因数の和:8175

約数の個数: 32

約数和(自身を含む): 545638464

約数和(自身を除く): 225638709

約数列:

[1, 3, 5, 15, 17, 51, 85, 157, 255, 471, 785, 2355, 2669, 7993, 8007, 13345, 23979, 39965, 40035, 119895, 135881, 407643, 679405, 1254901, 2038215, 3764703, 6274505, 18823515, 21333317, 63999951, 106666585, 319999755]

約数ペア:

[(1, 319999755), (3, 106666585), (5, 63999951), (15, 21333317), (17, 18823515), (51, 6274505), (85, 3764703), (157, 2038215), (255, 1254901), (471, 679405), (785, 407643), (2355, 135881), (2669, 119895), (7993, 40035), (8007, 39965), (13345, 23979)]