398876504

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{31}}^2\times {\mathrm{307}}^1$

素因数の和:401

約数の個数: 72

約数和(自身を含む): 839541780

約数和(自身を除く): 440665276

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 169, 248, 307, 338, 403, 614, 676, 806, 961, 1228, 1352, 1612, 1922, 2456, 3224, 3844, 3991, 5239, 7688, 7982, 9517, 10478, 12493, 15964, 19034, 20956, 24986, 31928, 38068, 41912, 49972, 51883, 76136, 99944, 103766, 123721, 162409, 207532, 247442, 295027, 324818, 415064, 494884, 590054, 649636, 989768, 1180108, 1299272, 1608373, 2360216, 3216746, 3835351, 6433492, 7670702, 12866984, 15341404, 30682808, 49859563, 99719126, 199438252, 398876504]

約数ペア:

[(1, 398876504), (2, 199438252), (4, 99719126), (8, 49859563), (13, 30682808), (26, 15341404), (31, 12866984), (52, 7670702), (62, 6433492), (104, 3835351), (124, 3216746), (169, 2360216), (248, 1608373), (307, 1299272), (338, 1180108), (403, 989768), (614, 649636), (676, 590054), (806, 494884), (961, 415064), (1228, 324818), (1352, 295027), (1612, 247442), (1922, 207532), (2456, 162409), (3224, 123721), (3844, 103766), (3991, 99944), (5239, 76136), (7688, 51883), (7982, 49972), (9517, 41912), (10478, 38068), (12493, 31928), (15964, 24986), (19034, 20956)]