20259120

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1$

素因数の和:443

約数の個数: 160

約数和(自身を含む): 74280960

約数和(自身を除く): 54021840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 31, 35, 40, 42, 48, 56, 60, 62, 70, 80, 84, 93, 105, 112, 120, 124, 140, 155, 168, 186, 210, 217, 240, 248, 280, 310, 336, 372, 389, 420, 434, 465, 496, 560, 620, 651, 744, 778, 840, 868, 930, 1085, 1167, 1240, 1302, 1488, 1556, 1680, 1736, 1860, 1945, 2170, 2334, 2480, 2604, 2723, 3112, 3255, 3472, 3720, 3890, 4340, 4668, 5208, 5446, 5835, 6224, 6510, 7440, 7780, 8169, 8680, 9336, 10416, 10892, 11670, 12059, 13020, 13615, 15560, 16338, 17360, 18672, 21784, 23340, 24118, 26040, 27230, 31120, 32676, 36177, 40845, 43568, 46680, 48236, 52080, 54460, 60295, 65352, 72354, 81690, 84413, 93360, 96472, 108920, 120590, 130704, 144708, 163380, 168826, 180885, 192944, 217840, 241180, 253239, 289416, 326760, 337652, 361770, 422065, 482360, 506478, 578832, 653520, 675304, 723540, 844130, 964720, 1012956, 1266195, 1350608, 1447080, 1688260, 2025912, 2532390, 2894160, 3376520, 4051824, 5064780, 6753040, 10129560, 20259120]

約数ペア:

[(1, 20259120), (2, 10129560), (3, 6753040), (4, 5064780), (5, 4051824), (6, 3376520), (7, 2894160), (8, 2532390), (10, 2025912), (12, 1688260), (14, 1447080), (15, 1350608), (16, 1266195), (20, 1012956), (21, 964720), (24, 844130), (28, 723540), (30, 675304), (31, 653520), (35, 578832), (40, 506478), (42, 482360), (48, 422065), (56, 361770), (60, 337652), (62, 326760), (70, 289416), (80, 253239), (84, 241180), (93, 217840), (105, 192944), (112, 180885), (120, 168826), (124, 163380), (140, 144708), (155, 130704), (168, 120590), (186, 108920), (210, 96472), (217, 93360), (240, 84413), (248, 81690), (280, 72354), (310, 65352), (336, 60295), (372, 54460), (389, 52080), (420, 48236), (434, 46680), (465, 43568), (496, 40845), (560, 36177), (620, 32676), (651, 31120), (744, 27230), (778, 26040), (840, 24118), (868, 23340), (930, 21784), (1085, 18672), (1167, 17360), (1240, 16338), (1302, 15560), (1488, 13615), (1556, 13020), (1680, 12059), (1736, 11670), (1860, 10892), (1945, 10416), (2170, 9336), (2334, 8680), (2480, 8169), (2604, 7780), (2723, 7440), (3112, 6510), (3255, 6224), (3472, 5835), (3720, 5446), (3890, 5208), (4340, 4668)]