20469904

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{827}}^1$

素因数の和:872

約数の個数: 80

約数和(自身を含む): 51746688

約数和(自身を除く): 31276784

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 17, 26, 28, 34, 52, 56, 68, 91, 104, 112, 119, 136, 182, 208, 221, 238, 272, 364, 442, 476, 728, 827, 884, 952, 1456, 1547, 1654, 1768, 1904, 3094, 3308, 3536, 5789, 6188, 6616, 10751, 11578, 12376, 13232, 14059, 21502, 23156, 24752, 28118, 43004, 46312, 56236, 75257, 86008, 92624, 98413, 112472, 150514, 172016, 182767, 196826, 224944, 301028, 365534, 393652, 602056, 731068, 787304, 1204112, 1279369, 1462136, 1574608, 2558738, 2924272, 5117476, 10234952, 20469904]

約数ペア:

[(1, 20469904), (2, 10234952), (4, 5117476), (7, 2924272), (8, 2558738), (13, 1574608), (14, 1462136), (16, 1279369), (17, 1204112), (26, 787304), (28, 731068), (34, 602056), (52, 393652), (56, 365534), (68, 301028), (91, 224944), (104, 196826), (112, 182767), (119, 172016), (136, 150514), (182, 112472), (208, 98413), (221, 92624), (238, 86008), (272, 75257), (364, 56236), (442, 46312), (476, 43004), (728, 28118), (827, 24752), (884, 23156), (952, 21502), (1456, 14059), (1547, 13232), (1654, 12376), (1768, 11578), (1904, 10751), (3094, 6616), (3308, 6188), (3536, 5789)]