21158568

素因数分解:

$2^3\times 3^2\times {\mathrm{71}}^1\times {\mathrm{4139}}^1$

素因数の和:4222

約数の個数: 48

約数和(自身を含む): 58125600

約数和(自身を除く): 36967032

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 71, 72, 142, 213, 284, 426, 568, 639, 852, 1278, 1704, 2556, 4139, 5112, 8278, 12417, 16556, 24834, 33112, 37251, 49668, 74502, 99336, 149004, 293869, 298008, 587738, 881607, 1175476, 1763214, 2350952, 2644821, 3526428, 5289642, 7052856, 10579284, 21158568]

約数ペア:

[(1, 21158568), (2, 10579284), (3, 7052856), (4, 5289642), (6, 3526428), (8, 2644821), (9, 2350952), (12, 1763214), (18, 1175476), (24, 881607), (36, 587738), (71, 298008), (72, 293869), (142, 149004), (213, 99336), (284, 74502), (426, 49668), (568, 37251), (639, 33112), (852, 24834), (1278, 16556), (1704, 12417), (2556, 8278), (4139, 5112)]