31997280

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:221

約数の個数: 192

約数和(自身を含む): 117573120

約数和(自身を除く): 85575840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 70, 80, 84, 89, 96, 105, 107, 112, 120, 140, 160, 168, 178, 210, 214, 224, 240, 267, 280, 321, 336, 356, 420, 428, 445, 480, 534, 535, 560, 623, 642, 672, 712, 749, 840, 856, 890, 1068, 1070, 1120, 1246, 1284, 1335, 1424, 1498, 1605, 1680, 1712, 1780, 1869, 2136, 2140, 2247, 2492, 2568, 2670, 2848, 2996, 3115, 3210, 3360, 3424, 3560, 3738, 3745, 4272, 4280, 4494, 4984, 5136, 5340, 5992, 6230, 6420, 7120, 7476, 7490, 8544, 8560, 8988, 9345, 9523, 9968, 10272, 10680, 11235, 11984, 12460, 12840, 14240, 14952, 14980, 17120, 17976, 18690, 19046, 19936, 21360, 22470, 23968, 24920, 25680, 28569, 29904, 29960, 35952, 37380, 38092, 42720, 44940, 47615, 49840, 51360, 57138, 59808, 59920, 66661, 71904, 74760, 76184, 89880, 95230, 99680, 114276, 119840, 133322, 142845, 149520, 152368, 179760, 190460, 199983, 228552, 266644, 285690, 299040, 304736, 333305, 359520, 380920, 399966, 457104, 533288, 571380, 666610, 761840, 799932, 914208, 999915, 1066576, 1142760, 1333220, 1523680, 1599864, 1999830, 2133152, 2285520, 2666440, 3199728, 3999660, 4571040, 5332880, 6399456, 7999320, 10665760, 15998640, 31997280]

約数ペア:

[(1, 31997280), (2, 15998640), (3, 10665760), (4, 7999320), (5, 6399456), (6, 5332880), (7, 4571040), (8, 3999660), (10, 3199728), (12, 2666440), (14, 2285520), (15, 2133152), (16, 1999830), (20, 1599864), (21, 1523680), (24, 1333220), (28, 1142760), (30, 1066576), (32, 999915), (35, 914208), (40, 799932), (42, 761840), (48, 666610), (56, 571380), (60, 533288), (70, 457104), (80, 399966), (84, 380920), (89, 359520), (96, 333305), (105, 304736), (107, 299040), (112, 285690), (120, 266644), (140, 228552), (160, 199983), (168, 190460), (178, 179760), (210, 152368), (214, 149520), (224, 142845), (240, 133322), (267, 119840), (280, 114276), (321, 99680), (336, 95230), (356, 89880), (420, 76184), (428, 74760), (445, 71904), (480, 66661), (534, 59920), (535, 59808), (560, 57138), (623, 51360), (642, 49840), (672, 47615), (712, 44940), (749, 42720), (840, 38092), (856, 37380), (890, 35952), (1068, 29960), (1070, 29904), (1120, 28569), (1246, 25680), (1284, 24920), (1335, 23968), (1424, 22470), (1498, 21360), (1605, 19936), (1680, 19046), (1712, 18690), (1780, 17976), (1869, 17120), (2136, 14980), (2140, 14952), (2247, 14240), (2492, 12840), (2568, 12460), (2670, 11984), (2848, 11235), (2996, 10680), (3115, 10272), (3210, 9968), (3360, 9523), (3424, 9345), (3560, 8988), (3738, 8560), (3745, 8544), (4272, 7490), (4280, 7476), (4494, 7120), (4984, 6420), (5136, 6230), (5340, 5992)]