21959648

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1091}}^1$

素因数の和:1155

約数の個数: 48

約数和(自身を含む): 47056464

約数和(自身を除く): 25096816

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 37, 68, 74, 136, 148, 272, 296, 544, 592, 629, 1091, 1184, 1258, 2182, 2516, 4364, 5032, 8728, 10064, 17456, 18547, 20128, 34912, 37094, 40367, 74188, 80734, 148376, 161468, 296752, 322936, 593504, 645872, 686239, 1291744, 1372478, 2744956, 5489912, 10979824, 21959648]

約数ペア:

[(1, 21959648), (2, 10979824), (4, 5489912), (8, 2744956), (16, 1372478), (17, 1291744), (32, 686239), (34, 645872), (37, 593504), (68, 322936), (74, 296752), (136, 161468), (148, 148376), (272, 80734), (296, 74188), (544, 40367), (592, 37094), (629, 34912), (1091, 20128), (1184, 18547), (1258, 17456), (2182, 10064), (2516, 8728), (4364, 5032)]