18919136

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{29}}^2\times {\mathrm{37}}^1$

素因数の和:124

約数の個数: 72

約数和(自身を含む): 41703480

約数和(自身を除く): 22784344

約数列:

[1, 2, 4, 8, 16, 19, 29, 32, 37, 38, 58, 74, 76, 116, 148, 152, 232, 296, 304, 464, 551, 592, 608, 703, 841, 928, 1073, 1102, 1184, 1406, 1682, 2146, 2204, 2812, 3364, 4292, 4408, 5624, 6728, 8584, 8816, 11248, 13456, 15979, 17168, 17632, 20387, 22496, 26912, 31117, 31958, 34336, 40774, 62234, 63916, 81548, 124468, 127832, 163096, 248936, 255664, 326192, 497872, 511328, 591223, 652384, 995744, 1182446, 2364892, 4729784, 9459568, 18919136]

約数ペア:

[(1, 18919136), (2, 9459568), (4, 4729784), (8, 2364892), (16, 1182446), (19, 995744), (29, 652384), (32, 591223), (37, 511328), (38, 497872), (58, 326192), (74, 255664), (76, 248936), (116, 163096), (148, 127832), (152, 124468), (232, 81548), (296, 63916), (304, 62234), (464, 40774), (551, 34336), (592, 31958), (608, 31117), (703, 26912), (841, 22496), (928, 20387), (1073, 17632), (1102, 17168), (1184, 15979), (1406, 13456), (1682, 11248), (2146, 8816), (2204, 8584), (2812, 6728), (3364, 5624), (4292, 4408)]