20905728

素因数分解:

$2^8\times 3^1\times {\mathrm{163}}^1\times {\mathrm{167}}^1$

素因数の和:349

約数の個数: 72

約数和(自身を含む): 56316288

約数和(自身を除く): 35410560

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 163, 167, 192, 256, 326, 334, 384, 489, 501, 652, 668, 768, 978, 1002, 1304, 1336, 1956, 2004, 2608, 2672, 3912, 4008, 5216, 5344, 7824, 8016, 10432, 10688, 15648, 16032, 20864, 21376, 27221, 31296, 32064, 41728, 42752, 54442, 62592, 64128, 81663, 108884, 125184, 128256, 163326, 217768, 326652, 435536, 653304, 871072, 1306608, 1742144, 2613216, 3484288, 5226432, 6968576, 10452864, 20905728]

約数ペア:

[(1, 20905728), (2, 10452864), (3, 6968576), (4, 5226432), (6, 3484288), (8, 2613216), (12, 1742144), (16, 1306608), (24, 871072), (32, 653304), (48, 435536), (64, 326652), (96, 217768), (128, 163326), (163, 128256), (167, 125184), (192, 108884), (256, 81663), (326, 64128), (334, 62592), (384, 54442), (489, 42752), (501, 41728), (652, 32064), (668, 31296), (768, 27221), (978, 21376), (1002, 20864), (1304, 16032), (1336, 15648), (1956, 10688), (2004, 10432), (2608, 8016), (2672, 7824), (3912, 5344), (4008, 5216)]