21562646679

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{253717}}^1$

素因数の和:253820

約数の個数: 48

約数和(自身を含む): 37996807680

約数和(自身を除く): 16434161001

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 71, 133, 171, 213, 399, 497, 639, 1197, 1349, 1491, 4047, 4473, 9443, 12141, 28329, 84987, 253717, 761151, 1776019, 2283453, 4820623, 5328057, 14461869, 15984171, 18013907, 33744361, 43385607, 54041721, 101233083, 126097349, 162125163, 303699249, 342264233, 378292047, 1026792699, 1134876141, 2395849631, 3080378097, 7187548893, 21562646679]

約数ペア:

[(1, 21562646679), (3, 7187548893), (7, 3080378097), (9, 2395849631), (19, 1134876141), (21, 1026792699), (57, 378292047), (63, 342264233), (71, 303699249), (133, 162125163), (171, 126097349), (213, 101233083), (399, 54041721), (497, 43385607), (639, 33744361), (1197, 18013907), (1349, 15984171), (1491, 14461869), (4047, 5328057), (4473, 4820623), (9443, 2283453), (12141, 1776019), (28329, 761151), (84987, 253717)]