20281664

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1283}}^1$

素因数の和:1327

約数の個数: 56

約数和(自身を含む): 45659040

約数和(自身を除く): 25377376

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 64, 76, 104, 152, 208, 247, 304, 416, 494, 608, 832, 988, 1216, 1283, 1976, 2566, 3952, 5132, 7904, 10264, 15808, 16679, 20528, 24377, 33358, 41056, 48754, 66716, 82112, 97508, 133432, 195016, 266864, 316901, 390032, 533728, 633802, 780064, 1067456, 1267604, 1560128, 2535208, 5070416, 10140832, 20281664]

約数ペア:

[(1, 20281664), (2, 10140832), (4, 5070416), (8, 2535208), (13, 1560128), (16, 1267604), (19, 1067456), (26, 780064), (32, 633802), (38, 533728), (52, 390032), (64, 316901), (76, 266864), (104, 195016), (152, 133432), (208, 97508), (247, 82112), (304, 66716), (416, 48754), (494, 41056), (608, 33358), (832, 24377), (988, 20528), (1216, 16679), (1283, 15808), (1976, 10264), (2566, 7904), (3952, 5132)]