21271744

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{691}}^1$

素因数の和:753

約数の個数: 56

約数和(自身を含む): 46754288

約数和(自身を除く): 25482544

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 37, 52, 64, 74, 104, 148, 208, 296, 416, 481, 592, 691, 832, 962, 1184, 1382, 1924, 2368, 2764, 3848, 5528, 7696, 8983, 11056, 15392, 17966, 22112, 25567, 30784, 35932, 44224, 51134, 71864, 102268, 143728, 204536, 287456, 332371, 409072, 574912, 664742, 818144, 1329484, 1636288, 2658968, 5317936, 10635872, 21271744]

約数ペア:

[(1, 21271744), (2, 10635872), (4, 5317936), (8, 2658968), (13, 1636288), (16, 1329484), (26, 818144), (32, 664742), (37, 574912), (52, 409072), (64, 332371), (74, 287456), (104, 204536), (148, 143728), (208, 102268), (296, 71864), (416, 51134), (481, 44224), (592, 35932), (691, 30784), (832, 25567), (962, 22112), (1184, 17966), (1382, 15392), (1924, 11056), (2368, 8983), (2764, 7696), (3848, 5528)]