251279280

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{16619}}^1$

素因数の和:16648

約数の個数: 160

約数和(自身を含む): 989222400

約数和(自身を除く): 737943120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 168, 180, 189, 210, 216, 240, 252, 270, 280, 315, 336, 360, 378, 420, 432, 504, 540, 560, 630, 720, 756, 840, 945, 1008, 1080, 1260, 1512, 1680, 1890, 2160, 2520, 3024, 3780, 5040, 7560, 15120, 16619, 33238, 49857, 66476, 83095, 99714, 116333, 132952, 149571, 166190, 199428, 232666, 249285, 265904, 299142, 332380, 348999, 398856, 448713, 465332, 498570, 581665, 598284, 664760, 697998, 747855, 797712, 897426, 930664, 997140, 1046997, 1163330, 1196568, 1329520, 1395996, 1495710, 1744995, 1794852, 1861328, 1994280, 2093994, 2243565, 2326660, 2393136, 2791992, 2991420, 3140991, 3489990, 3589704, 3988560, 4187988, 4487130, 4653320, 5234985, 5583984, 5982840, 6281982, 6979980, 7179408, 8375976, 8974260, 9306640, 10469970, 11965680, 12563964, 13959960, 15704955, 16751952, 17948520, 20939940, 25127928, 27919920, 31409910, 35897040, 41879880, 50255856, 62819820, 83759760, 125639640, 251279280]

約数ペア:

[(1, 251279280), (2, 125639640), (3, 83759760), (4, 62819820), (5, 50255856), (6, 41879880), (7, 35897040), (8, 31409910), (9, 27919920), (10, 25127928), (12, 20939940), (14, 17948520), (15, 16751952), (16, 15704955), (18, 13959960), (20, 12563964), (21, 11965680), (24, 10469970), (27, 9306640), (28, 8974260), (30, 8375976), (35, 7179408), (36, 6979980), (40, 6281982), (42, 5982840), (45, 5583984), (48, 5234985), (54, 4653320), (56, 4487130), (60, 4187988), (63, 3988560), (70, 3589704), (72, 3489990), (80, 3140991), (84, 2991420), (90, 2791992), (105, 2393136), (108, 2326660), (112, 2243565), (120, 2093994), (126, 1994280), (135, 1861328), (140, 1794852), (144, 1744995), (168, 1495710), (180, 1395996), (189, 1329520), (210, 1196568), (216, 1163330), (240, 1046997), (252, 997140), (270, 930664), (280, 897426), (315, 797712), (336, 747855), (360, 697998), (378, 664760), (420, 598284), (432, 581665), (504, 498570), (540, 465332), (560, 448713), (630, 398856), (720, 348999), (756, 332380), (840, 299142), (945, 265904), (1008, 249285), (1080, 232666), (1260, 199428), (1512, 166190), (1680, 149571), (1890, 132952), (2160, 116333), (2520, 99714), (3024, 83095), (3780, 66476), (5040, 49857), (7560, 33238), (15120, 16619)]