18857188

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 39118464

約数和(自身を除く): 20261276

約数列:

[1, 2, 4, 7, 14, 28, 53, 97, 106, 131, 194, 212, 262, 371, 388, 524, 679, 742, 917, 1358, 1484, 1834, 2716, 3668, 5141, 6943, 10282, 12707, 13886, 20564, 25414, 27772, 35987, 48601, 50828, 71974, 88949, 97202, 143948, 177898, 194404, 355796, 673471, 1346942, 2693884, 4714297, 9428594, 18857188]

約数ペア:

[(1, 18857188), (2, 9428594), (4, 4714297), (7, 2693884), (14, 1346942), (28, 673471), (53, 355796), (97, 194404), (106, 177898), (131, 143948), (194, 97202), (212, 88949), (262, 71974), (371, 50828), (388, 48601), (524, 35987), (679, 27772), (742, 25414), (917, 20564), (1358, 13886), (1484, 12707), (1834, 10282), (2716, 6943), (3668, 5141)]