21607768

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{443}}^1$

素因数の和:536

約数の個数: 64

約数和(自身を含む): 50722560

約数和(自身を除く): 29114792

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 67, 91, 104, 134, 182, 268, 364, 443, 469, 536, 728, 871, 886, 938, 1742, 1772, 1876, 3101, 3484, 3544, 3752, 5759, 6097, 6202, 6968, 11518, 12194, 12404, 23036, 24388, 24808, 29681, 40313, 46072, 48776, 59362, 80626, 118724, 161252, 207767, 237448, 322504, 385853, 415534, 771706, 831068, 1543412, 1662136, 2700971, 3086824, 5401942, 10803884, 21607768]

約数ペア:

[(1, 21607768), (2, 10803884), (4, 5401942), (7, 3086824), (8, 2700971), (13, 1662136), (14, 1543412), (26, 831068), (28, 771706), (52, 415534), (56, 385853), (67, 322504), (91, 237448), (104, 207767), (134, 161252), (182, 118724), (268, 80626), (364, 59362), (443, 48776), (469, 46072), (536, 40313), (728, 29681), (871, 24808), (886, 24388), (938, 23036), (1742, 12404), (1772, 12194), (1876, 11518), (3101, 6968), (3484, 6202), (3544, 6097), (3752, 5759)]