21361600

素因数分解:

$2^6\times 5^2\times {\mathrm{13}}^2\times {\mathrm{79}}^1$

素因数の和:127

約数の個数: 126

約数和(自身を含む): 57637680

約数和(自身を除く): 36276080

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 79, 80, 100, 104, 130, 158, 160, 169, 200, 208, 260, 316, 320, 325, 338, 395, 400, 416, 520, 632, 650, 676, 790, 800, 832, 845, 1027, 1040, 1264, 1300, 1352, 1580, 1600, 1690, 1975, 2054, 2080, 2528, 2600, 2704, 3160, 3380, 3950, 4108, 4160, 4225, 5056, 5135, 5200, 5408, 6320, 6760, 7900, 8216, 8450, 10270, 10400, 10816, 12640, 13351, 13520, 15800, 16432, 16900, 20540, 20800, 25280, 25675, 26702, 27040, 31600, 32864, 33800, 41080, 51350, 53404, 54080, 63200, 65728, 66755, 67600, 82160, 102700, 106808, 126400, 133510, 135200, 164320, 205400, 213616, 267020, 270400, 328640, 333775, 410800, 427232, 534040, 667550, 821600, 854464, 1068080, 1335100, 1643200, 2136160, 2670200, 4272320, 5340400, 10680800, 21361600]

約数ペア:

[(1, 21361600), (2, 10680800), (4, 5340400), (5, 4272320), (8, 2670200), (10, 2136160), (13, 1643200), (16, 1335100), (20, 1068080), (25, 854464), (26, 821600), (32, 667550), (40, 534040), (50, 427232), (52, 410800), (64, 333775), (65, 328640), (79, 270400), (80, 267020), (100, 213616), (104, 205400), (130, 164320), (158, 135200), (160, 133510), (169, 126400), (200, 106808), (208, 102700), (260, 82160), (316, 67600), (320, 66755), (325, 65728), (338, 63200), (395, 54080), (400, 53404), (416, 51350), (520, 41080), (632, 33800), (650, 32864), (676, 31600), (790, 27040), (800, 26702), (832, 25675), (845, 25280), (1027, 20800), (1040, 20540), (1264, 16900), (1300, 16432), (1352, 15800), (1580, 13520), (1600, 13351), (1690, 12640), (1975, 10816), (2054, 10400), (2080, 10270), (2528, 8450), (2600, 8216), (2704, 7900), (3160, 6760), (3380, 6320), (3950, 5408), (4108, 5200), (4160, 5135), (4225, 5056)]