19899536

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{977}}^1$

素因数の和:1071

約数の個数: 40

約数和(自身を含む): 41232480

約数和(自身を除く): 21332944

約数列:

[1, 2, 4, 8, 16, 19, 38, 67, 76, 134, 152, 268, 304, 536, 977, 1072, 1273, 1954, 2546, 3908, 5092, 7816, 10184, 15632, 18563, 20368, 37126, 65459, 74252, 130918, 148504, 261836, 297008, 523672, 1047344, 1243721, 2487442, 4974884, 9949768, 19899536]

約数ペア:

[(1, 19899536), (2, 9949768), (4, 4974884), (8, 2487442), (16, 1243721), (19, 1047344), (38, 523672), (67, 297008), (76, 261836), (134, 148504), (152, 130918), (268, 74252), (304, 65459), (536, 37126), (977, 20368), (1072, 18563), (1273, 15632), (1954, 10184), (2546, 7816), (3908, 5092)]