640405548

素因数分解:

$2^2\times 3^3\times {\mathrm{2143}}^1\times {\mathrm{2767}}^1$

素因数の和:4923

約数の個数: 48

約数和(自身を含む): 1661685760

約数和(自身を除く): 1021280212

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 2143, 2767, 4286, 5534, 6429, 8301, 8572, 11068, 12858, 16602, 19287, 24903, 25716, 33204, 38574, 49806, 57861, 74709, 77148, 99612, 115722, 149418, 231444, 298836, 5929681, 11859362, 17789043, 23718724, 35578086, 53367129, 71156172, 106734258, 160101387, 213468516, 320202774, 640405548]

約数ペア:

[(1, 640405548), (2, 320202774), (3, 213468516), (4, 160101387), (6, 106734258), (9, 71156172), (12, 53367129), (18, 35578086), (27, 23718724), (36, 17789043), (54, 11859362), (108, 5929681), (2143, 298836), (2767, 231444), (4286, 149418), (5534, 115722), (6429, 99612), (8301, 77148), (8572, 74709), (11068, 57861), (12858, 49806), (16602, 38574), (19287, 33204), (24903, 25716)]