398576672

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{997}}^1$

素因数の和:1082

約数の個数: 72

約数和(自身を含む): 874074348

約数和(自身を除く): 475497676

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 104, 124, 208, 248, 403, 416, 496, 806, 961, 992, 997, 1612, 1922, 1994, 3224, 3844, 3988, 6448, 7688, 7976, 12493, 12896, 12961, 15376, 15952, 24986, 25922, 30752, 30907, 31904, 49972, 51844, 61814, 99944, 103688, 123628, 199888, 207376, 247256, 399776, 401791, 414752, 494512, 803582, 958117, 989024, 1607164, 1916234, 3214328, 3832468, 6428656, 7664936, 12455521, 12857312, 15329872, 24911042, 30659744, 49822084, 99644168, 199288336, 398576672]

約数ペア:

[(1, 398576672), (2, 199288336), (4, 99644168), (8, 49822084), (13, 30659744), (16, 24911042), (26, 15329872), (31, 12857312), (32, 12455521), (52, 7664936), (62, 6428656), (104, 3832468), (124, 3214328), (208, 1916234), (248, 1607164), (403, 989024), (416, 958117), (496, 803582), (806, 494512), (961, 414752), (992, 401791), (997, 399776), (1612, 247256), (1922, 207376), (1994, 199888), (3224, 123628), (3844, 103688), (3988, 99944), (6448, 61814), (7688, 51844), (7976, 49972), (12493, 31904), (12896, 30907), (12961, 30752), (15376, 25922), (15952, 24986)]