21897512

素因数分解:

$2^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{4297}}^1$

素因数の和:4330

約数の個数: 48

約数和(自身を含む): 51447060

約数和(自身を除く): 29549548

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 49, 52, 56, 91, 98, 104, 182, 196, 364, 392, 637, 728, 1274, 2548, 4297, 5096, 8594, 17188, 30079, 34376, 55861, 60158, 111722, 120316, 210553, 223444, 240632, 391027, 421106, 446888, 782054, 842212, 1564108, 1684424, 2737189, 3128216, 5474378, 10948756, 21897512]

約数ペア:

[(1, 21897512), (2, 10948756), (4, 5474378), (7, 3128216), (8, 2737189), (13, 1684424), (14, 1564108), (26, 842212), (28, 782054), (49, 446888), (52, 421106), (56, 391027), (91, 240632), (98, 223444), (104, 210553), (182, 120316), (196, 111722), (364, 60158), (392, 55861), (637, 34376), (728, 30079), (1274, 17188), (2548, 8594), (4297, 5096)]