18525988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1103}}^1$

素因数の和:1156

約数の個数: 48

約数和(自身を含む): 38949120

約数和(自身を除く): 20423132

約数列:

[1, 2, 4, 13, 17, 19, 26, 34, 38, 52, 68, 76, 221, 247, 323, 442, 494, 646, 884, 988, 1103, 1292, 2206, 4199, 4412, 8398, 14339, 16796, 18751, 20957, 28678, 37502, 41914, 57356, 75004, 83828, 243763, 272441, 356269, 487526, 544882, 712538, 975052, 1089764, 1425076, 4631497, 9262994, 18525988]

約数ペア:

[(1, 18525988), (2, 9262994), (4, 4631497), (13, 1425076), (17, 1089764), (19, 975052), (26, 712538), (34, 544882), (38, 487526), (52, 356269), (68, 272441), (76, 243763), (221, 83828), (247, 75004), (323, 57356), (442, 41914), (494, 37502), (646, 28678), (884, 20957), (988, 18751), (1103, 16796), (1292, 14339), (2206, 8398), (4199, 4412)]