21757736

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1$

素因数の和:80

約数の個数: 144

約数和(自身を含む): 58413600

約数和(自身を除く): 36655864

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 19, 22, 26, 28, 38, 44, 52, 56, 76, 77, 88, 91, 104, 121, 133, 143, 152, 154, 169, 182, 209, 242, 247, 266, 286, 308, 338, 364, 418, 484, 494, 532, 572, 616, 676, 728, 836, 847, 968, 988, 1001, 1064, 1144, 1183, 1352, 1463, 1573, 1672, 1694, 1729, 1859, 1976, 2002, 2299, 2366, 2717, 2926, 3146, 3211, 3388, 3458, 3718, 4004, 4598, 4732, 5434, 5852, 6292, 6422, 6776, 6916, 7436, 8008, 9196, 9464, 10868, 11011, 11704, 12584, 12844, 13013, 13832, 14872, 16093, 18392, 19019, 20449, 21736, 22022, 22477, 25688, 26026, 29887, 32186, 35321, 38038, 40898, 44044, 44954, 52052, 59774, 64372, 70642, 76076, 81796, 88088, 89908, 104104, 119548, 128744, 141284, 143143, 152152, 163592, 179816, 209209, 239096, 247247, 282568, 286286, 388531, 418418, 494494, 572572, 777062, 836836, 988988, 1145144, 1554124, 1673672, 1977976, 2719717, 3108248, 5439434, 10878868, 21757736]

約数ペア:

[(1, 21757736), (2, 10878868), (4, 5439434), (7, 3108248), (8, 2719717), (11, 1977976), (13, 1673672), (14, 1554124), (19, 1145144), (22, 988988), (26, 836836), (28, 777062), (38, 572572), (44, 494494), (52, 418418), (56, 388531), (76, 286286), (77, 282568), (88, 247247), (91, 239096), (104, 209209), (121, 179816), (133, 163592), (143, 152152), (152, 143143), (154, 141284), (169, 128744), (182, 119548), (209, 104104), (242, 89908), (247, 88088), (266, 81796), (286, 76076), (308, 70642), (338, 64372), (364, 59774), (418, 52052), (484, 44954), (494, 44044), (532, 40898), (572, 38038), (616, 35321), (676, 32186), (728, 29887), (836, 26026), (847, 25688), (968, 22477), (988, 22022), (1001, 21736), (1064, 20449), (1144, 19019), (1183, 18392), (1352, 16093), (1463, 14872), (1573, 13832), (1672, 13013), (1694, 12844), (1729, 12584), (1859, 11704), (1976, 11011), (2002, 10868), (2299, 9464), (2366, 9196), (2717, 8008), (2926, 7436), (3146, 6916), (3211, 6776), (3388, 6422), (3458, 6292), (3718, 5852), (4004, 5434), (4598, 4732)]