21507425920

素因数分解:

$2^7\times 5^1\times {\mathrm{193}}^1\times {\mathrm{174121}}^1$

素因数の和:174333

約数の個数: 64

約数和(自身を含む): 51682892040

約数和(自身を除く): 30175466120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 193, 320, 386, 640, 772, 965, 1544, 1930, 3088, 3860, 6176, 7720, 12352, 15440, 24704, 30880, 61760, 123520, 174121, 348242, 696484, 870605, 1392968, 1741210, 2785936, 3482420, 5571872, 6964840, 11143744, 13929680, 22287488, 27859360, 33605353, 55718720, 67210706, 111437440, 134421412, 168026765, 268842824, 336053530, 537685648, 672107060, 1075371296, 1344214120, 2150742592, 2688428240, 4301485184, 5376856480, 10753712960, 21507425920]

約数ペア:

[(1, 21507425920), (2, 10753712960), (4, 5376856480), (5, 4301485184), (8, 2688428240), (10, 2150742592), (16, 1344214120), (20, 1075371296), (32, 672107060), (40, 537685648), (64, 336053530), (80, 268842824), (128, 168026765), (160, 134421412), (193, 111437440), (320, 67210706), (386, 55718720), (640, 33605353), (772, 27859360), (965, 22287488), (1544, 13929680), (1930, 11143744), (3088, 6964840), (3860, 5571872), (6176, 3482420), (7720, 2785936), (12352, 1741210), (15440, 1392968), (24704, 870605), (30880, 696484), (61760, 348242), (123520, 174121)]