18854368

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{743}}^1$

素因数の和:827

約数の個数: 48

約数和(自身を含む): 40684896

約数和(自身を除く): 21830528

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 61, 104, 122, 208, 244, 416, 488, 743, 793, 976, 1486, 1586, 1952, 2972, 3172, 5944, 6344, 9659, 11888, 12688, 19318, 23776, 25376, 38636, 45323, 77272, 90646, 154544, 181292, 309088, 362584, 589199, 725168, 1178398, 1450336, 2356796, 4713592, 9427184, 18854368]

約数ペア:

[(1, 18854368), (2, 9427184), (4, 4713592), (8, 2356796), (13, 1450336), (16, 1178398), (26, 725168), (32, 589199), (52, 362584), (61, 309088), (104, 181292), (122, 154544), (208, 90646), (244, 77272), (416, 45323), (488, 38636), (743, 25376), (793, 23776), (976, 19318), (1486, 12688), (1586, 11888), (1952, 9659), (2972, 6344), (3172, 5944)]