21397968

素因数分解:

$2^4\times 3^2\times {\mathrm{17}}^1\times {\mathrm{8741}}^1$

素因数の和:8772

約数の個数: 60

約数和(自身を含む): 63414468

約数和(自身を除く): 42016500

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 17, 18, 24, 34, 36, 48, 51, 68, 72, 102, 136, 144, 153, 204, 272, 306, 408, 612, 816, 1224, 2448, 8741, 17482, 26223, 34964, 52446, 69928, 78669, 104892, 139856, 148597, 157338, 209784, 297194, 314676, 419568, 445791, 594388, 629352, 891582, 1188776, 1258704, 1337373, 1783164, 2377552, 2674746, 3566328, 5349492, 7132656, 10698984, 21397968]

約数ペア:

[(1, 21397968), (2, 10698984), (3, 7132656), (4, 5349492), (6, 3566328), (8, 2674746), (9, 2377552), (12, 1783164), (16, 1337373), (17, 1258704), (18, 1188776), (24, 891582), (34, 629352), (36, 594388), (48, 445791), (51, 419568), (68, 314676), (72, 297194), (102, 209784), (136, 157338), (144, 148597), (153, 139856), (204, 104892), (272, 78669), (306, 69928), (408, 52446), (612, 34964), (816, 26223), (1224, 17482), (2448, 8741)]