81890640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{673}}^1$

素因数の和:718

約数の個数: 180

約数和(自身を含む): 298240956

約数和(自身を除く): 216350316

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 104, 117, 120, 130, 144, 156, 169, 180, 195, 208, 234, 240, 260, 312, 338, 360, 390, 468, 507, 520, 585, 624, 673, 676, 720, 780, 845, 936, 1014, 1040, 1170, 1346, 1352, 1521, 1560, 1690, 1872, 2019, 2028, 2340, 2535, 2692, 2704, 3042, 3120, 3365, 3380, 4038, 4056, 4680, 5070, 5384, 6057, 6084, 6730, 6760, 7605, 8076, 8112, 8749, 9360, 10095, 10140, 10768, 12114, 12168, 13460, 13520, 15210, 16152, 17498, 20190, 20280, 24228, 24336, 26247, 26920, 30285, 30420, 32304, 34996, 40380, 40560, 43745, 48456, 52494, 53840, 60570, 60840, 69992, 78741, 80760, 87490, 96912, 104988, 113737, 121140, 121680, 131235, 139984, 157482, 161520, 174980, 209976, 227474, 242280, 262470, 314964, 341211, 349960, 393705, 419952, 454948, 484560, 524940, 568685, 629928, 682422, 699920, 787410, 909896, 1023633, 1049880, 1137370, 1259856, 1364844, 1574820, 1706055, 1819792, 2047266, 2099760, 2274740, 2729688, 3149640, 3412110, 4094532, 4549480, 5118165, 5459376, 6299280, 6824220, 8189064, 9098960, 10236330, 13648440, 16378128, 20472660, 27296880, 40945320, 81890640]

約数ペア:

[(1, 81890640), (2, 40945320), (3, 27296880), (4, 20472660), (5, 16378128), (6, 13648440), (8, 10236330), (9, 9098960), (10, 8189064), (12, 6824220), (13, 6299280), (15, 5459376), (16, 5118165), (18, 4549480), (20, 4094532), (24, 3412110), (26, 3149640), (30, 2729688), (36, 2274740), (39, 2099760), (40, 2047266), (45, 1819792), (48, 1706055), (52, 1574820), (60, 1364844), (65, 1259856), (72, 1137370), (78, 1049880), (80, 1023633), (90, 909896), (104, 787410), (117, 699920), (120, 682422), (130, 629928), (144, 568685), (156, 524940), (169, 484560), (180, 454948), (195, 419952), (208, 393705), (234, 349960), (240, 341211), (260, 314964), (312, 262470), (338, 242280), (360, 227474), (390, 209976), (468, 174980), (507, 161520), (520, 157482), (585, 139984), (624, 131235), (673, 121680), (676, 121140), (720, 113737), (780, 104988), (845, 96912), (936, 87490), (1014, 80760), (1040, 78741), (1170, 69992), (1346, 60840), (1352, 60570), (1521, 53840), (1560, 52494), (1690, 48456), (1872, 43745), (2019, 40560), (2028, 40380), (2340, 34996), (2535, 32304), (2692, 30420), (2704, 30285), (3042, 26920), (3120, 26247), (3365, 24336), (3380, 24228), (4038, 20280), (4056, 20190), (4680, 17498), (5070, 16152), (5384, 15210), (6057, 13520), (6084, 13460), (6730, 12168), (6760, 12114), (7605, 10768), (8076, 10140), (8112, 10095), (8749, 9360)]