18955872

素因数分解:

$2^5\times 3^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:173

約数の個数: 144

約数和(自身を含む): 59714928

約数和(自身を除く): 40759056

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 32, 36, 39, 48, 52, 61, 72, 78, 83, 96, 104, 117, 122, 144, 156, 166, 183, 208, 234, 244, 249, 288, 312, 332, 366, 416, 468, 488, 498, 549, 624, 664, 732, 747, 793, 936, 976, 996, 1079, 1098, 1248, 1328, 1464, 1494, 1586, 1872, 1952, 1992, 2158, 2196, 2379, 2656, 2928, 2988, 3172, 3237, 3744, 3984, 4316, 4392, 4758, 5063, 5856, 5976, 6344, 6474, 7137, 7968, 8632, 8784, 9516, 9711, 10126, 11952, 12688, 12948, 14274, 15189, 17264, 17568, 19032, 19422, 20252, 23904, 25376, 25896, 28548, 30378, 34528, 38064, 38844, 40504, 45567, 51792, 57096, 60756, 65819, 76128, 77688, 81008, 91134, 103584, 114192, 121512, 131638, 155376, 162016, 182268, 197457, 228384, 243024, 263276, 310752, 364536, 394914, 486048, 526552, 592371, 729072, 789828, 1053104, 1184742, 1458144, 1579656, 2106208, 2369484, 3159312, 4738968, 6318624, 9477936, 18955872]

約数ペア:

[(1, 18955872), (2, 9477936), (3, 6318624), (4, 4738968), (6, 3159312), (8, 2369484), (9, 2106208), (12, 1579656), (13, 1458144), (16, 1184742), (18, 1053104), (24, 789828), (26, 729072), (32, 592371), (36, 526552), (39, 486048), (48, 394914), (52, 364536), (61, 310752), (72, 263276), (78, 243024), (83, 228384), (96, 197457), (104, 182268), (117, 162016), (122, 155376), (144, 131638), (156, 121512), (166, 114192), (183, 103584), (208, 91134), (234, 81008), (244, 77688), (249, 76128), (288, 65819), (312, 60756), (332, 57096), (366, 51792), (416, 45567), (468, 40504), (488, 38844), (498, 38064), (549, 34528), (624, 30378), (664, 28548), (732, 25896), (747, 25376), (793, 23904), (936, 20252), (976, 19422), (996, 19032), (1079, 17568), (1098, 17264), (1248, 15189), (1328, 14274), (1464, 12948), (1494, 12688), (1586, 11952), (1872, 10126), (1952, 9711), (1992, 9516), (2158, 8784), (2196, 8632), (2379, 7968), (2656, 7137), (2928, 6474), (2988, 6344), (3172, 5976), (3237, 5856), (3744, 5063), (3984, 4758), (4316, 4392)]