20787039

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1493}}^1$

素因数の和:1536

約数の個数: 48

約数和(自身を含む): 39154752

約数和(自身を除く): 18367713

約数列:

[1, 3, 7, 9, 13, 17, 21, 39, 51, 63, 91, 117, 119, 153, 221, 273, 357, 663, 819, 1071, 1493, 1547, 1989, 4479, 4641, 10451, 13437, 13923, 19409, 25381, 31353, 58227, 76143, 94059, 135863, 174681, 177667, 228429, 329953, 407589, 533001, 989859, 1222767, 1599003, 2309671, 2969577, 6929013, 20787039]

約数ペア:

[(1, 20787039), (3, 6929013), (7, 2969577), (9, 2309671), (13, 1599003), (17, 1222767), (21, 989859), (39, 533001), (51, 407589), (63, 329953), (91, 228429), (117, 177667), (119, 174681), (153, 135863), (221, 94059), (273, 76143), (357, 58227), (663, 31353), (819, 25381), (1071, 19409), (1493, 13923), (1547, 13437), (1989, 10451), (4479, 4641)]