19986516

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1231}}^1$

素因数の和:1293

約数の個数: 72

約数和(自身を含む): 56504448

約数和(自身を除く): 36517932

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 41, 44, 66, 82, 99, 123, 132, 164, 198, 246, 369, 396, 451, 492, 738, 902, 1231, 1353, 1476, 1804, 2462, 2706, 3693, 4059, 4924, 5412, 7386, 8118, 11079, 13541, 14772, 16236, 22158, 27082, 40623, 44316, 50471, 54164, 81246, 100942, 121869, 151413, 162492, 201884, 243738, 302826, 454239, 487476, 555181, 605652, 908478, 1110362, 1665543, 1816956, 2220724, 3331086, 4996629, 6662172, 9993258, 19986516]

約数ペア:

[(1, 19986516), (2, 9993258), (3, 6662172), (4, 4996629), (6, 3331086), (9, 2220724), (11, 1816956), (12, 1665543), (18, 1110362), (22, 908478), (33, 605652), (36, 555181), (41, 487476), (44, 454239), (66, 302826), (82, 243738), (99, 201884), (123, 162492), (132, 151413), (164, 121869), (198, 100942), (246, 81246), (369, 54164), (396, 50471), (451, 44316), (492, 40623), (738, 27082), (902, 22158), (1231, 16236), (1353, 14772), (1476, 13541), (1804, 11079), (2462, 8118), (2706, 7386), (3693, 5412), (4059, 4924)]