21258144

素因数分解:

$2^5\times 3^2\times {\mathrm{223}}^1\times {\mathrm{331}}^1$

素因数の和:570

約数の個数: 72

約数和(自身を含む): 60907392

約数和(自身を除く): 39649248

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 223, 288, 331, 446, 662, 669, 892, 993, 1324, 1338, 1784, 1986, 2007, 2648, 2676, 2979, 3568, 3972, 4014, 5296, 5352, 5958, 7136, 7944, 8028, 10592, 10704, 11916, 15888, 16056, 21408, 23832, 31776, 32112, 47664, 64224, 73813, 95328, 147626, 221439, 295252, 442878, 590504, 664317, 885756, 1181008, 1328634, 1771512, 2362016, 2657268, 3543024, 5314536, 7086048, 10629072, 21258144]

約数ペア:

[(1, 21258144), (2, 10629072), (3, 7086048), (4, 5314536), (6, 3543024), (8, 2657268), (9, 2362016), (12, 1771512), (16, 1328634), (18, 1181008), (24, 885756), (32, 664317), (36, 590504), (48, 442878), (72, 295252), (96, 221439), (144, 147626), (223, 95328), (288, 73813), (331, 64224), (446, 47664), (662, 32112), (669, 31776), (892, 23832), (993, 21408), (1324, 16056), (1338, 15888), (1784, 11916), (1986, 10704), (2007, 10592), (2648, 8028), (2676, 7944), (2979, 7136), (3568, 5958), (3972, 5352), (4014, 5296)]