20856240

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{349}}^1$

素因数の和:451

約数の個数: 120

約数和(自身を含む): 71089200

約数和(自身を除く): 50232960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 83, 90, 120, 144, 166, 180, 240, 249, 332, 349, 360, 415, 498, 664, 698, 720, 747, 830, 996, 1047, 1245, 1328, 1396, 1494, 1660, 1745, 1992, 2094, 2490, 2792, 2988, 3141, 3320, 3490, 3735, 3984, 4188, 4980, 5235, 5584, 5976, 6282, 6640, 6980, 7470, 8376, 9960, 10470, 11952, 12564, 13960, 14940, 15705, 16752, 19920, 20940, 25128, 27920, 28967, 29880, 31410, 41880, 50256, 57934, 59760, 62820, 83760, 86901, 115868, 125640, 144835, 173802, 231736, 251280, 260703, 289670, 347604, 434505, 463472, 521406, 579340, 695208, 869010, 1042812, 1158680, 1303515, 1390416, 1738020, 2085624, 2317360, 2607030, 3476040, 4171248, 5214060, 6952080, 10428120, 20856240]

約数ペア:

[(1, 20856240), (2, 10428120), (3, 6952080), (4, 5214060), (5, 4171248), (6, 3476040), (8, 2607030), (9, 2317360), (10, 2085624), (12, 1738020), (15, 1390416), (16, 1303515), (18, 1158680), (20, 1042812), (24, 869010), (30, 695208), (36, 579340), (40, 521406), (45, 463472), (48, 434505), (60, 347604), (72, 289670), (80, 260703), (83, 251280), (90, 231736), (120, 173802), (144, 144835), (166, 125640), (180, 115868), (240, 86901), (249, 83760), (332, 62820), (349, 59760), (360, 57934), (415, 50256), (498, 41880), (664, 31410), (698, 29880), (720, 28967), (747, 27920), (830, 25128), (996, 20940), (1047, 19920), (1245, 16752), (1328, 15705), (1396, 14940), (1494, 13960), (1660, 12564), (1745, 11952), (1992, 10470), (2094, 9960), (2490, 8376), (2792, 7470), (2988, 6980), (3141, 6640), (3320, 6282), (3490, 5976), (3735, 5584), (3984, 5235), (4188, 4980)]