18721872

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:237

約数の個数: 120

約数和(自身を含む): 57616104

約数和(自身を除く): 38894232

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 72, 73, 78, 104, 117, 137, 144, 146, 156, 208, 219, 234, 274, 292, 312, 411, 438, 468, 548, 584, 624, 657, 822, 876, 936, 949, 1096, 1168, 1233, 1314, 1644, 1752, 1781, 1872, 1898, 2192, 2466, 2628, 2847, 3288, 3504, 3562, 3796, 4932, 5256, 5343, 5694, 6576, 7124, 7592, 8541, 9864, 10001, 10512, 10686, 11388, 14248, 15184, 16029, 17082, 19728, 20002, 21372, 22776, 28496, 30003, 32058, 34164, 40004, 42744, 45552, 60006, 64116, 68328, 80008, 85488, 90009, 120012, 128232, 130013, 136656, 160016, 180018, 240024, 256464, 260026, 360036, 390039, 480048, 520052, 720072, 780078, 1040104, 1170117, 1440144, 1560156, 2080208, 2340234, 3120312, 4680468, 6240624, 9360936, 18721872]

約数ペア:

[(1, 18721872), (2, 9360936), (3, 6240624), (4, 4680468), (6, 3120312), (8, 2340234), (9, 2080208), (12, 1560156), (13, 1440144), (16, 1170117), (18, 1040104), (24, 780078), (26, 720072), (36, 520052), (39, 480048), (48, 390039), (52, 360036), (72, 260026), (73, 256464), (78, 240024), (104, 180018), (117, 160016), (137, 136656), (144, 130013), (146, 128232), (156, 120012), (208, 90009), (219, 85488), (234, 80008), (274, 68328), (292, 64116), (312, 60006), (411, 45552), (438, 42744), (468, 40004), (548, 34164), (584, 32058), (624, 30003), (657, 28496), (822, 22776), (876, 21372), (936, 20002), (949, 19728), (1096, 17082), (1168, 16029), (1233, 15184), (1314, 14248), (1644, 11388), (1752, 10686), (1781, 10512), (1872, 10001), (1898, 9864), (2192, 8541), (2466, 7592), (2628, 7124), (2847, 6576), (3288, 5694), (3504, 5343), (3562, 5256), (3796, 4932)]