81106480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{857}}^1$

素因数の和:903

約数の個数: 120

約数和(自身を含む): 233636832

約数和(自身を除く): 152530352

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 169, 182, 208, 260, 280, 338, 364, 455, 520, 560, 676, 728, 845, 857, 910, 1040, 1183, 1352, 1456, 1690, 1714, 1820, 2366, 2704, 3380, 3428, 3640, 4285, 4732, 5915, 5999, 6760, 6856, 7280, 8570, 9464, 11141, 11830, 11998, 13520, 13712, 17140, 18928, 22282, 23660, 23996, 29995, 34280, 44564, 47320, 47992, 55705, 59990, 68560, 77987, 89128, 94640, 95984, 111410, 119980, 144833, 155974, 178256, 222820, 239960, 289666, 311948, 389935, 445640, 479920, 579332, 623896, 724165, 779870, 891280, 1013831, 1158664, 1247792, 1448330, 1559740, 2027662, 2317328, 2896660, 3119480, 4055324, 5069155, 5793320, 6238960, 8110648, 10138310, 11586640, 16221296, 20276620, 40553240, 81106480]

約数ペア:

[(1, 81106480), (2, 40553240), (4, 20276620), (5, 16221296), (7, 11586640), (8, 10138310), (10, 8110648), (13, 6238960), (14, 5793320), (16, 5069155), (20, 4055324), (26, 3119480), (28, 2896660), (35, 2317328), (40, 2027662), (52, 1559740), (56, 1448330), (65, 1247792), (70, 1158664), (80, 1013831), (91, 891280), (104, 779870), (112, 724165), (130, 623896), (140, 579332), (169, 479920), (182, 445640), (208, 389935), (260, 311948), (280, 289666), (338, 239960), (364, 222820), (455, 178256), (520, 155974), (560, 144833), (676, 119980), (728, 111410), (845, 95984), (857, 94640), (910, 89128), (1040, 77987), (1183, 68560), (1352, 59990), (1456, 55705), (1690, 47992), (1714, 47320), (1820, 44564), (2366, 34280), (2704, 29995), (3380, 23996), (3428, 23660), (3640, 22282), (4285, 18928), (4732, 17140), (5915, 13712), (5999, 13520), (6760, 11998), (6856, 11830), (7280, 11141), (8570, 9464)]