20368480

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:260

約数の個数: 96

約数和(自身を含む): 53561088

約数和(自身を除く): 33192608

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 71, 80, 88, 110, 142, 160, 163, 176, 220, 284, 326, 352, 355, 440, 568, 652, 710, 781, 815, 880, 1136, 1304, 1420, 1562, 1630, 1760, 1793, 2272, 2608, 2840, 3124, 3260, 3586, 3905, 5216, 5680, 6248, 6520, 7172, 7810, 8965, 11360, 11573, 12496, 13040, 14344, 15620, 17930, 23146, 24992, 26080, 28688, 31240, 35860, 46292, 57376, 57865, 62480, 71720, 92584, 115730, 124960, 127303, 143440, 185168, 231460, 254606, 286880, 370336, 462920, 509212, 636515, 925840, 1018424, 1273030, 1851680, 2036848, 2546060, 4073696, 5092120, 10184240, 20368480]

約数ペア:

[(1, 20368480), (2, 10184240), (4, 5092120), (5, 4073696), (8, 2546060), (10, 2036848), (11, 1851680), (16, 1273030), (20, 1018424), (22, 925840), (32, 636515), (40, 509212), (44, 462920), (55, 370336), (71, 286880), (80, 254606), (88, 231460), (110, 185168), (142, 143440), (160, 127303), (163, 124960), (176, 115730), (220, 92584), (284, 71720), (326, 62480), (352, 57865), (355, 57376), (440, 46292), (568, 35860), (652, 31240), (710, 28688), (781, 26080), (815, 24992), (880, 23146), (1136, 17930), (1304, 15620), (1420, 14344), (1562, 13040), (1630, 12496), (1760, 11573), (1793, 11360), (2272, 8965), (2608, 7810), (2840, 7172), (3124, 6520), (3260, 6248), (3586, 5680), (3905, 5216)]