21799648

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{139}}^1$

素因数の和:204

約数の個数: 72

約数和(自身を含む): 48421800

約数和(自身を除く): 26622152

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 32, 52, 58, 104, 116, 139, 169, 208, 232, 278, 338, 377, 416, 464, 556, 676, 754, 928, 1112, 1352, 1508, 1807, 2224, 2704, 3016, 3614, 4031, 4448, 4901, 5408, 6032, 7228, 8062, 9802, 12064, 14456, 16124, 19604, 23491, 28912, 32248, 39208, 46982, 52403, 57824, 64496, 78416, 93964, 104806, 128992, 156832, 187928, 209612, 375856, 419224, 681239, 751712, 838448, 1362478, 1676896, 2724956, 5449912, 10899824, 21799648]

約数ペア:

[(1, 21799648), (2, 10899824), (4, 5449912), (8, 2724956), (13, 1676896), (16, 1362478), (26, 838448), (29, 751712), (32, 681239), (52, 419224), (58, 375856), (104, 209612), (116, 187928), (139, 156832), (169, 128992), (208, 104806), (232, 93964), (278, 78416), (338, 64496), (377, 57824), (416, 52403), (464, 46982), (556, 39208), (676, 32248), (754, 28912), (928, 23491), (1112, 19604), (1352, 16124), (1508, 14456), (1807, 12064), (2224, 9802), (2704, 8062), (3016, 7228), (3614, 6032), (4031, 5408), (4448, 4901)]