19065904

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{641}}^1$

素因数の和:686

約数の個数: 60

約数和(自身を含む): 43704792

約数和(自身を除く): 24638888

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 88, 104, 143, 169, 176, 208, 286, 338, 572, 641, 676, 1144, 1282, 1352, 1859, 2288, 2564, 2704, 3718, 5128, 7051, 7436, 8333, 10256, 14102, 14872, 16666, 28204, 29744, 33332, 56408, 66664, 91663, 108329, 112816, 133328, 183326, 216658, 366652, 433316, 733304, 866632, 1191619, 1466608, 1733264, 2383238, 4766476, 9532952, 19065904]

約数ペア:

[(1, 19065904), (2, 9532952), (4, 4766476), (8, 2383238), (11, 1733264), (13, 1466608), (16, 1191619), (22, 866632), (26, 733304), (44, 433316), (52, 366652), (88, 216658), (104, 183326), (143, 133328), (169, 112816), (176, 108329), (208, 91663), (286, 66664), (338, 56408), (572, 33332), (641, 29744), (676, 28204), (1144, 16666), (1282, 14872), (1352, 14102), (1859, 10256), (2288, 8333), (2564, 7436), (2704, 7051), (3718, 5128)]