18821248

素因数分解:

$2^7\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:213

約数の個数: 64

約数和(自身を含む): 40392000

約数和(自身を除く): 21570752

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 71, 76, 109, 128, 142, 152, 218, 284, 304, 436, 568, 608, 872, 1136, 1216, 1349, 1744, 2071, 2272, 2432, 2698, 3488, 4142, 4544, 5396, 6976, 7739, 8284, 9088, 10792, 13952, 15478, 16568, 21584, 30956, 33136, 43168, 61912, 66272, 86336, 123824, 132544, 147041, 172672, 247648, 265088, 294082, 495296, 588164, 990592, 1176328, 2352656, 4705312, 9410624, 18821248]

約数ペア:

[(1, 18821248), (2, 9410624), (4, 4705312), (8, 2352656), (16, 1176328), (19, 990592), (32, 588164), (38, 495296), (64, 294082), (71, 265088), (76, 247648), (109, 172672), (128, 147041), (142, 132544), (152, 123824), (218, 86336), (284, 66272), (304, 61912), (436, 43168), (568, 33136), (608, 30956), (872, 21584), (1136, 16568), (1216, 15478), (1349, 13952), (1744, 10792), (2071, 9088), (2272, 8284), (2432, 7739), (2698, 6976), (3488, 5396), (4142, 4544)]