640872001

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{5501}}^1$

素因数の和:5625

約数の個数: 32

約数和(自身を含む): 855671040

約数和(自身を除く): 214799039

約数列:

[1, 7, 11, 17, 77, 89, 119, 187, 623, 979, 1309, 1513, 5501, 6853, 10591, 16643, 38507, 60511, 93517, 116501, 423577, 489589, 654619, 1028687, 3427123, 5385479, 7200809, 8323013, 37698353, 58261091, 91553143, 640872001]

約数ペア:

[(1, 640872001), (7, 91553143), (11, 58261091), (17, 37698353), (77, 8323013), (89, 7200809), (119, 5385479), (187, 3427123), (623, 1028687), (979, 654619), (1309, 489589), (1513, 423577), (5501, 116501), (6853, 93517), (10591, 60511), (16643, 38507)]