20188688

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{101}}^1$

素因数の和:184

約数の個数: 60

約数和(自身を含む): 43958124

約数和(自身を除く): 23769436

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 101, 104, 124, 202, 208, 248, 403, 404, 496, 806, 808, 961, 1313, 1612, 1616, 1922, 2626, 3131, 3224, 3844, 5252, 6262, 6448, 7688, 10504, 12493, 12524, 15376, 21008, 24986, 25048, 40703, 49972, 50096, 81406, 97061, 99944, 162812, 194122, 199888, 325624, 388244, 651248, 776488, 1261793, 1552976, 2523586, 5047172, 10094344, 20188688]

約数ペア:

[(1, 20188688), (2, 10094344), (4, 5047172), (8, 2523586), (13, 1552976), (16, 1261793), (26, 776488), (31, 651248), (52, 388244), (62, 325624), (101, 199888), (104, 194122), (124, 162812), (202, 99944), (208, 97061), (248, 81406), (403, 50096), (404, 49972), (496, 40703), (806, 25048), (808, 24986), (961, 21008), (1313, 15376), (1612, 12524), (1616, 12493), (1922, 10504), (2626, 7688), (3131, 6448), (3224, 6262), (3844, 5252)]