18678368

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{991}}^1$

素因数の和:1051

約数の個数: 48

約数和(自身を含む): 39997440

約数和(自身を除く): 21319072

約数列:

[1, 2, 4, 8, 16, 19, 31, 32, 38, 62, 76, 124, 152, 248, 304, 496, 589, 608, 991, 992, 1178, 1982, 2356, 3964, 4712, 7928, 9424, 15856, 18829, 18848, 30721, 31712, 37658, 61442, 75316, 122884, 150632, 245768, 301264, 491536, 583699, 602528, 983072, 1167398, 2334796, 4669592, 9339184, 18678368]

約数ペア:

[(1, 18678368), (2, 9339184), (4, 4669592), (8, 2334796), (16, 1167398), (19, 983072), (31, 602528), (32, 583699), (38, 491536), (62, 301264), (76, 245768), (124, 150632), (152, 122884), (248, 75316), (304, 61442), (496, 37658), (589, 31712), (608, 30721), (991, 18848), (992, 18829), (1178, 15856), (1982, 9424), (2356, 7928), (3964, 4712)]