81513396

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{31891}}^1$

素因数の和:31972

約数の個数: 36

約数和(自身を含む): 208956384

約数和(自身を除く): 127442988

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 142, 213, 284, 426, 639, 852, 1278, 2556, 31891, 63782, 95673, 127564, 191346, 287019, 382692, 574038, 1148076, 2264261, 4528522, 6792783, 9057044, 13585566, 20378349, 27171132, 40756698, 81513396]

約数ペア:

[(1, 81513396), (2, 40756698), (3, 27171132), (4, 20378349), (6, 13585566), (9, 9057044), (12, 6792783), (18, 4528522), (36, 2264261), (71, 1148076), (142, 574038), (213, 382692), (284, 287019), (426, 191346), (639, 127564), (852, 95673), (1278, 63782), (2556, 31891)]