20805824

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1471}}^1$

素因数の和:1513

約数の個数: 56

約数和(自身を含む): 47109888

約数和(自身を除く): 26304064

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 64, 68, 104, 136, 208, 221, 272, 416, 442, 544, 832, 884, 1088, 1471, 1768, 2942, 3536, 5884, 7072, 11768, 14144, 19123, 23536, 25007, 38246, 47072, 50014, 76492, 94144, 100028, 152984, 200056, 305968, 325091, 400112, 611936, 650182, 800224, 1223872, 1300364, 1600448, 2600728, 5201456, 10402912, 20805824]

約数ペア:

[(1, 20805824), (2, 10402912), (4, 5201456), (8, 2600728), (13, 1600448), (16, 1300364), (17, 1223872), (26, 800224), (32, 650182), (34, 611936), (52, 400112), (64, 325091), (68, 305968), (104, 200056), (136, 152984), (208, 100028), (221, 94144), (272, 76492), (416, 50014), (442, 47072), (544, 38246), (832, 25007), (884, 23536), (1088, 19123), (1471, 14144), (1768, 11768), (2942, 7072), (3536, 5884)]