18657904

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{509}}^1$

素因数の和:625

約数の個数: 40

約数和(自身を含む): 37944000

約数和(自身を除く): 19286096

約数列:

[1, 2, 4, 8, 16, 29, 58, 79, 116, 158, 232, 316, 464, 509, 632, 1018, 1264, 2036, 2291, 4072, 4582, 8144, 9164, 14761, 18328, 29522, 36656, 40211, 59044, 80422, 118088, 160844, 236176, 321688, 643376, 1166119, 2332238, 4664476, 9328952, 18657904]

約数ペア:

[(1, 18657904), (2, 9328952), (4, 4664476), (8, 2332238), (16, 1166119), (29, 643376), (58, 321688), (79, 236176), (116, 160844), (158, 118088), (232, 80422), (316, 59044), (464, 40211), (509, 36656), (632, 29522), (1018, 18328), (1264, 14761), (2036, 9164), (2291, 8144), (4072, 4582)]