278520788

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{829}}^1$

素因数の和:937

約数の個数: 72

約数和(自身を含む): 612420480

約数和(自身を除く): 333899692

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 71, 91, 142, 169, 182, 284, 338, 364, 497, 676, 829, 923, 994, 1183, 1658, 1846, 1988, 2366, 3316, 3692, 4732, 5803, 6461, 10777, 11606, 11999, 12922, 21554, 23212, 23998, 25844, 43108, 47996, 58859, 75439, 83993, 117718, 140101, 150878, 167986, 235436, 280202, 301756, 335972, 412013, 560404, 765167, 824026, 980707, 1530334, 1648052, 1961414, 3060668, 3922828, 5356169, 9947171, 10712338, 19894342, 21424676, 39788684, 69630197, 139260394, 278520788]

約数ペア:

[(1, 278520788), (2, 139260394), (4, 69630197), (7, 39788684), (13, 21424676), (14, 19894342), (26, 10712338), (28, 9947171), (52, 5356169), (71, 3922828), (91, 3060668), (142, 1961414), (169, 1648052), (182, 1530334), (284, 980707), (338, 824026), (364, 765167), (497, 560404), (676, 412013), (829, 335972), (923, 301756), (994, 280202), (1183, 235436), (1658, 167986), (1846, 150878), (1988, 140101), (2366, 117718), (3316, 83993), (3692, 75439), (4732, 58859), (5803, 47996), (6461, 43108), (10777, 25844), (11606, 23998), (11999, 23212), (12922, 21554)]