21781488

素因数分解:

$2^4\times 3^1\times {\mathrm{17}}^1\times {\mathrm{26693}}^1$

素因数の和:26721

約数の個数: 40

約数和(自身を含む): 59581008

約数和(自身を除く): 37799520

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 48, 51, 68, 102, 136, 204, 272, 408, 816, 26693, 53386, 80079, 106772, 160158, 213544, 320316, 427088, 453781, 640632, 907562, 1281264, 1361343, 1815124, 2722686, 3630248, 5445372, 7260496, 10890744, 21781488]

約数ペア:

[(1, 21781488), (2, 10890744), (3, 7260496), (4, 5445372), (6, 3630248), (8, 2722686), (12, 1815124), (16, 1361343), (17, 1281264), (24, 907562), (34, 640632), (48, 453781), (51, 427088), (68, 320316), (102, 213544), (136, 160158), (204, 106772), (272, 80079), (408, 53386), (816, 26693)]