21078504

素因数分解:

$2^3\times 3^2\times {\mathrm{17}}^2\times {\mathrm{1013}}^1$

素因数の和:1059

約数の個数: 72

約数和(自身を含む): 60703110

約数和(自身を除く): 39624606

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 17, 18, 24, 34, 36, 51, 68, 72, 102, 136, 153, 204, 289, 306, 408, 578, 612, 867, 1013, 1156, 1224, 1734, 2026, 2312, 2601, 3039, 3468, 4052, 5202, 6078, 6936, 8104, 9117, 10404, 12156, 17221, 18234, 20808, 24312, 34442, 36468, 51663, 68884, 72936, 103326, 137768, 154989, 206652, 292757, 309978, 413304, 585514, 619956, 878271, 1171028, 1239912, 1756542, 2342056, 2634813, 3513084, 5269626, 7026168, 10539252, 21078504]

約数ペア:

[(1, 21078504), (2, 10539252), (3, 7026168), (4, 5269626), (6, 3513084), (8, 2634813), (9, 2342056), (12, 1756542), (17, 1239912), (18, 1171028), (24, 878271), (34, 619956), (36, 585514), (51, 413304), (68, 309978), (72, 292757), (102, 206652), (136, 154989), (153, 137768), (204, 103326), (289, 72936), (306, 68884), (408, 51663), (578, 36468), (612, 34442), (867, 24312), (1013, 20808), (1156, 18234), (1224, 17221), (1734, 12156), (2026, 10404), (2312, 9117), (2601, 8104), (3039, 6936), (3468, 6078), (4052, 5202)]