18637216

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{631}}^1$

素因数の和:725

約数の個数: 48

約数和(自身を含む): 40134528

約数和(自身を除く): 21497312

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 71, 104, 142, 208, 284, 416, 568, 631, 923, 1136, 1262, 1846, 2272, 2524, 3692, 5048, 7384, 8203, 10096, 14768, 16406, 20192, 29536, 32812, 44801, 65624, 89602, 131248, 179204, 262496, 358408, 582413, 716816, 1164826, 1433632, 2329652, 4659304, 9318608, 18637216]

約数ペア:

[(1, 18637216), (2, 9318608), (4, 4659304), (8, 2329652), (13, 1433632), (16, 1164826), (26, 716816), (32, 582413), (52, 358408), (71, 262496), (104, 179204), (142, 131248), (208, 89602), (284, 65624), (416, 44801), (568, 32812), (631, 29536), (923, 20192), (1136, 16406), (1262, 14768), (1846, 10096), (2272, 8203), (2524, 7384), (3692, 5048)]