81990630

素因数分解:

$2^1\times 3^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1$

素因数の和:214

約数の個数: 128

約数和(自身を含む): 232381440

約数和(自身を除く): 150390810

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 27, 30, 45, 46, 54, 69, 81, 90, 115, 135, 138, 162, 163, 207, 230, 243, 270, 326, 345, 405, 414, 486, 489, 621, 690, 729, 810, 815, 978, 1035, 1215, 1242, 1458, 1467, 1630, 1863, 2070, 2187, 2430, 2445, 2934, 3105, 3645, 3726, 3749, 4374, 4401, 4890, 5589, 6210, 7290, 7335, 7498, 8802, 9315, 10935, 11178, 11247, 13203, 14670, 16767, 18630, 18745, 21870, 22005, 22494, 26406, 27945, 33534, 33741, 37490, 39609, 44010, 50301, 55890, 56235, 66015, 67482, 79218, 83835, 100602, 101223, 112470, 118827, 132030, 167670, 168705, 198045, 202446, 237654, 251505, 303669, 337410, 356481, 396090, 503010, 506115, 594135, 607338, 712962, 911007, 1012230, 1188270, 1518345, 1782405, 1822014, 2733021, 3036690, 3564810, 4555035, 5466042, 8199063, 9110070, 13665105, 16398126, 27330210, 40995315, 81990630]

約数ペア:

[(1, 81990630), (2, 40995315), (3, 27330210), (5, 16398126), (6, 13665105), (9, 9110070), (10, 8199063), (15, 5466042), (18, 4555035), (23, 3564810), (27, 3036690), (30, 2733021), (45, 1822014), (46, 1782405), (54, 1518345), (69, 1188270), (81, 1012230), (90, 911007), (115, 712962), (135, 607338), (138, 594135), (162, 506115), (163, 503010), (207, 396090), (230, 356481), (243, 337410), (270, 303669), (326, 251505), (345, 237654), (405, 202446), (414, 198045), (486, 168705), (489, 167670), (621, 132030), (690, 118827), (729, 112470), (810, 101223), (815, 100602), (978, 83835), (1035, 79218), (1215, 67482), (1242, 66015), (1458, 56235), (1467, 55890), (1630, 50301), (1863, 44010), (2070, 39609), (2187, 37490), (2430, 33741), (2445, 33534), (2934, 27945), (3105, 26406), (3645, 22494), (3726, 22005), (3749, 21870), (4374, 18745), (4401, 18630), (4890, 16767), (5589, 14670), (6210, 13203), (7290, 11247), (7335, 11178), (7498, 10935), (8802, 9315)]