19901967904

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{19583}}^1$

素因数の和:19962

約数の個数: 96

約数和(自身を含む): 48364646400

約数和(自身を除く): 28462678496

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 182, 208, 224, 349, 364, 416, 698, 728, 1396, 1456, 2443, 2792, 2912, 4537, 4886, 5584, 9074, 9772, 11168, 18148, 19544, 19583, 31759, 36296, 39088, 39166, 63518, 72592, 78176, 78332, 127036, 137081, 145184, 156664, 254072, 254579, 274162, 313328, 508144, 509158, 548324, 626656, 1016288, 1018316, 1096648, 1782053, 2036632, 2193296, 3564106, 4073264, 4386592, 6834467, 7128212, 8146528, 13668934, 14256424, 27337868, 28512848, 47841269, 54675736, 57025696, 88848071, 95682538, 109351472, 177696142, 191365076, 218702944, 355392284, 382730152, 621936497, 710784568, 765460304, 1243872994, 1421569136, 1530920608, 2487745988, 2843138272, 4975491976, 9950983952, 19901967904]

約数ペア:

[(1, 19901967904), (2, 9950983952), (4, 4975491976), (7, 2843138272), (8, 2487745988), (13, 1530920608), (14, 1421569136), (16, 1243872994), (26, 765460304), (28, 710784568), (32, 621936497), (52, 382730152), (56, 355392284), (91, 218702944), (104, 191365076), (112, 177696142), (182, 109351472), (208, 95682538), (224, 88848071), (349, 57025696), (364, 54675736), (416, 47841269), (698, 28512848), (728, 27337868), (1396, 14256424), (1456, 13668934), (2443, 8146528), (2792, 7128212), (2912, 6834467), (4537, 4386592), (4886, 4073264), (5584, 3564106), (9074, 2193296), (9772, 2036632), (11168, 1782053), (18148, 1096648), (19544, 1018316), (19583, 1016288), (31759, 626656), (36296, 548324), (39088, 509158), (39166, 508144), (63518, 313328), (72592, 274162), (78176, 254579), (78332, 254072), (127036, 156664), (137081, 145184)]