18878986064

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{69408037}}^1$

素因数の和:69408062

約数の個数: 20

約数和(自身を含む): 38729685204

約数和(自身を除く): 19850699140

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 69408037, 138816074, 277632148, 555264296, 1110528592, 1179936629, 2359873258, 4719746516, 9439493032, 18878986064]

約数ペア:

[(1, 18878986064), (2, 9439493032), (4, 4719746516), (8, 2359873258), (16, 1179936629), (17, 1110528592), (34, 555264296), (68, 277632148), (136, 138816074), (272, 69408037)]