21390824

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29383}}^1$

素因数の和:29409

約数の個数: 32

約数和(自身を含む): 49365120

約数和(自身を除く): 27974296

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 29383, 58766, 117532, 205681, 235064, 381979, 411362, 763958, 822724, 1527916, 1645448, 2673853, 3055832, 5347706, 10695412, 21390824]

約数ペア:

[(1, 21390824), (2, 10695412), (4, 5347706), (7, 3055832), (8, 2673853), (13, 1645448), (14, 1527916), (26, 822724), (28, 763958), (52, 411362), (56, 381979), (91, 235064), (104, 205681), (182, 117532), (364, 58766), (728, 29383)]