21518868

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:269

約数の個数: 96

約数和(自身を含む): 61465600

約数和(自身を除く): 39946732

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 19, 21, 28, 38, 42, 57, 76, 84, 97, 114, 133, 139, 194, 228, 266, 278, 291, 388, 399, 417, 532, 556, 582, 679, 798, 834, 973, 1164, 1358, 1596, 1668, 1843, 1946, 2037, 2641, 2716, 2919, 3686, 3892, 4074, 5282, 5529, 5838, 7372, 7923, 8148, 10564, 11058, 11676, 12901, 13483, 15846, 18487, 22116, 25802, 26966, 31692, 36974, 38703, 40449, 51604, 53932, 55461, 73948, 77406, 80898, 94381, 110922, 154812, 161796, 188762, 221844, 256177, 283143, 377524, 512354, 566286, 768531, 1024708, 1132572, 1537062, 1793239, 3074124, 3586478, 5379717, 7172956, 10759434, 21518868]

約数ペア:

[(1, 21518868), (2, 10759434), (3, 7172956), (4, 5379717), (6, 3586478), (7, 3074124), (12, 1793239), (14, 1537062), (19, 1132572), (21, 1024708), (28, 768531), (38, 566286), (42, 512354), (57, 377524), (76, 283143), (84, 256177), (97, 221844), (114, 188762), (133, 161796), (139, 154812), (194, 110922), (228, 94381), (266, 80898), (278, 77406), (291, 73948), (388, 55461), (399, 53932), (417, 51604), (532, 40449), (556, 38703), (582, 36974), (679, 31692), (798, 26966), (834, 25802), (973, 22116), (1164, 18487), (1358, 15846), (1596, 13483), (1668, 12901), (1843, 11676), (1946, 11058), (2037, 10564), (2641, 8148), (2716, 7923), (2919, 7372), (3686, 5838), (3892, 5529), (4074, 5282)]