20509412

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{3917}}^1$

素因数の和:3956

約数の個数: 48

約数和(自身を含む): 47392128

約数和(自身を除く): 26882716

約数列:

[1, 2, 4, 7, 11, 14, 17, 22, 28, 34, 44, 68, 77, 119, 154, 187, 238, 308, 374, 476, 748, 1309, 2618, 3917, 5236, 7834, 15668, 27419, 43087, 54838, 66589, 86174, 109676, 133178, 172348, 266356, 301609, 466123, 603218, 732479, 932246, 1206436, 1464958, 1864492, 2929916, 5127353, 10254706, 20509412]

約数ペア:

[(1, 20509412), (2, 10254706), (4, 5127353), (7, 2929916), (11, 1864492), (14, 1464958), (17, 1206436), (22, 932246), (28, 732479), (34, 603218), (44, 466123), (68, 301609), (77, 266356), (119, 172348), (154, 133178), (187, 109676), (238, 86174), (308, 66589), (374, 54838), (476, 43087), (748, 27419), (1309, 15668), (2618, 7834), (3917, 5236)]