18784974

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{283}}^1$

素因数の和:361

約数の個数: 64

約数和(自身を含む): 43513344

約数和(自身を除く): 24728370

約数列:

[1, 2, 3, 6, 13, 23, 26, 37, 39, 46, 69, 74, 78, 111, 138, 222, 283, 299, 481, 566, 598, 849, 851, 897, 962, 1443, 1698, 1702, 1794, 2553, 2886, 3679, 5106, 6509, 7358, 10471, 11037, 11063, 13018, 19527, 20942, 22074, 22126, 31413, 33189, 39054, 62826, 66378, 84617, 136123, 169234, 240833, 253851, 272246, 408369, 481666, 507702, 722499, 816738, 1444998, 3130829, 6261658, 9392487, 18784974]

約数ペア:

[(1, 18784974), (2, 9392487), (3, 6261658), (6, 3130829), (13, 1444998), (23, 816738), (26, 722499), (37, 507702), (39, 481666), (46, 408369), (69, 272246), (74, 253851), (78, 240833), (111, 169234), (138, 136123), (222, 84617), (283, 66378), (299, 62826), (481, 39054), (566, 33189), (598, 31413), (849, 22126), (851, 22074), (897, 20942), (962, 19527), (1443, 13018), (1698, 11063), (1702, 11037), (1794, 10471), (2553, 7358), (2886, 6509), (3679, 5106)]