20954648

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{1409}}^1$

素因数の和:1452

約数の個数: 48

約数和(自身を含む): 46445400

約数和(自身を除く): 25490752

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 169, 286, 338, 572, 676, 1144, 1352, 1409, 1859, 2818, 3718, 5636, 7436, 11272, 14872, 15499, 18317, 30998, 36634, 61996, 73268, 123992, 146536, 201487, 238121, 402974, 476242, 805948, 952484, 1611896, 1904968, 2619331, 5238662, 10477324, 20954648]

約数ペア:

[(1, 20954648), (2, 10477324), (4, 5238662), (8, 2619331), (11, 1904968), (13, 1611896), (22, 952484), (26, 805948), (44, 476242), (52, 402974), (88, 238121), (104, 201487), (143, 146536), (169, 123992), (286, 73268), (338, 61996), (572, 36634), (676, 30998), (1144, 18317), (1352, 15499), (1409, 14872), (1859, 11272), (2818, 7436), (3718, 5636)]