18291988

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{283}}^1$

素因数の和:424

約数の個数: 48

約数和(自身を含む): 38074176

約数和(自身を除く): 19782188

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 113, 143, 226, 283, 286, 452, 566, 572, 1132, 1243, 1469, 2486, 2938, 3113, 3679, 4972, 5876, 6226, 7358, 12452, 14716, 16159, 31979, 32318, 40469, 63958, 64636, 80938, 127916, 161876, 351769, 415727, 703538, 831454, 1407076, 1662908, 4572997, 9145994, 18291988]

約数ペア:

[(1, 18291988), (2, 9145994), (4, 4572997), (11, 1662908), (13, 1407076), (22, 831454), (26, 703538), (44, 415727), (52, 351769), (113, 161876), (143, 127916), (226, 80938), (283, 64636), (286, 63958), (452, 40469), (566, 32318), (572, 31979), (1132, 16159), (1243, 14716), (1469, 12452), (2486, 7358), (2938, 6226), (3113, 5876), (3679, 4972)]