20917312

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{811}}^1$

素因数の和:867

約数の個数: 56

約数和(自身を含む): 46199552

約数和(自身を除く): 25282240

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 104, 124, 208, 248, 403, 416, 496, 806, 811, 832, 992, 1612, 1622, 1984, 3224, 3244, 6448, 6488, 10543, 12896, 12976, 21086, 25141, 25792, 25952, 42172, 50282, 51904, 84344, 100564, 168688, 201128, 326833, 337376, 402256, 653666, 674752, 804512, 1307332, 1609024, 2614664, 5229328, 10458656, 20917312]

約数ペア:

[(1, 20917312), (2, 10458656), (4, 5229328), (8, 2614664), (13, 1609024), (16, 1307332), (26, 804512), (31, 674752), (32, 653666), (52, 402256), (62, 337376), (64, 326833), (104, 201128), (124, 168688), (208, 100564), (248, 84344), (403, 51904), (416, 50282), (496, 42172), (806, 25952), (811, 25792), (832, 25141), (992, 21086), (1612, 12976), (1622, 12896), (1984, 10543), (3224, 6488), (3244, 6448)]