81215860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{6257}}^1$

素因数の和:6336

約数の個数: 48

約数和(自身を含む): 189241920

約数和(自身を除く): 108026060

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 59, 110, 118, 220, 236, 295, 590, 649, 1180, 1298, 2596, 3245, 6257, 6490, 12514, 12980, 25028, 31285, 62570, 68827, 125140, 137654, 275308, 344135, 369163, 688270, 738326, 1376540, 1476652, 1845815, 3691630, 4060793, 7383260, 8121586, 16243172, 20303965, 40607930, 81215860]

約数ペア:

[(1, 81215860), (2, 40607930), (4, 20303965), (5, 16243172), (10, 8121586), (11, 7383260), (20, 4060793), (22, 3691630), (44, 1845815), (55, 1476652), (59, 1376540), (110, 738326), (118, 688270), (220, 369163), (236, 344135), (295, 275308), (590, 137654), (649, 125140), (1180, 68827), (1298, 62570), (2596, 31285), (3245, 25028), (6257, 12980), (6490, 12514)]