20788376

素因数分解:

$2^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:256

約数の個数: 64

約数和(自身を含む): 46694400

約数和(自身を除く): 25906024

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 56, 74, 79, 127, 148, 158, 254, 259, 296, 316, 508, 518, 553, 632, 889, 1016, 1036, 1106, 1778, 2072, 2212, 2923, 3556, 4424, 4699, 5846, 7112, 9398, 10033, 11692, 18796, 20066, 20461, 23384, 32893, 37592, 40132, 40922, 65786, 70231, 80264, 81844, 131572, 140462, 163688, 263144, 280924, 371221, 561848, 742442, 1484884, 2598547, 2969768, 5197094, 10394188, 20788376]

約数ペア:

[(1, 20788376), (2, 10394188), (4, 5197094), (7, 2969768), (8, 2598547), (14, 1484884), (28, 742442), (37, 561848), (56, 371221), (74, 280924), (79, 263144), (127, 163688), (148, 140462), (158, 131572), (254, 81844), (259, 80264), (296, 70231), (316, 65786), (508, 40922), (518, 40132), (553, 37592), (632, 32893), (889, 23384), (1016, 20461), (1036, 20066), (1106, 18796), (1778, 11692), (2072, 10033), (2212, 9398), (2923, 7112), (3556, 5846), (4424, 4699)]