19690528

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{331}}^1$

素因数の和:378

約数の個数: 72

約数和(自身を含む): 45931536

約数和(自身を除く): 26241008

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 32, 44, 52, 88, 104, 143, 169, 176, 208, 286, 331, 338, 352, 416, 572, 662, 676, 1144, 1324, 1352, 1859, 2288, 2648, 2704, 3641, 3718, 4303, 4576, 5296, 5408, 7282, 7436, 8606, 10592, 14564, 14872, 17212, 29128, 29744, 34424, 47333, 55939, 58256, 59488, 68848, 94666, 111878, 116512, 137696, 189332, 223756, 378664, 447512, 615329, 757328, 895024, 1230658, 1514656, 1790048, 2461316, 4922632, 9845264, 19690528]

約数ペア:

[(1, 19690528), (2, 9845264), (4, 4922632), (8, 2461316), (11, 1790048), (13, 1514656), (16, 1230658), (22, 895024), (26, 757328), (32, 615329), (44, 447512), (52, 378664), (88, 223756), (104, 189332), (143, 137696), (169, 116512), (176, 111878), (208, 94666), (286, 68848), (331, 59488), (338, 58256), (352, 55939), (416, 47333), (572, 34424), (662, 29744), (676, 29128), (1144, 17212), (1324, 14872), (1352, 14564), (1859, 10592), (2288, 8606), (2648, 7436), (2704, 7282), (3641, 5408), (3718, 5296), (4303, 4576)]