21160692

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{641}}^1$

素因数の和:789

約数の個数: 72

約数和(自身を含む): 61693632

約数和(自身を除く): 40532940

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 131, 252, 262, 393, 524, 641, 786, 917, 1179, 1282, 1572, 1834, 1923, 2358, 2564, 2751, 3668, 3846, 4487, 4716, 5502, 5769, 7692, 8253, 8974, 11004, 11538, 13461, 16506, 17948, 23076, 26922, 33012, 40383, 53844, 80766, 83971, 161532, 167942, 251913, 335884, 503826, 587797, 755739, 1007652, 1175594, 1511478, 1763391, 2351188, 3022956, 3526782, 5290173, 7053564, 10580346, 21160692]

約数ペア:

[(1, 21160692), (2, 10580346), (3, 7053564), (4, 5290173), (6, 3526782), (7, 3022956), (9, 2351188), (12, 1763391), (14, 1511478), (18, 1175594), (21, 1007652), (28, 755739), (36, 587797), (42, 503826), (63, 335884), (84, 251913), (126, 167942), (131, 161532), (252, 83971), (262, 80766), (393, 53844), (524, 40383), (641, 33012), (786, 26922), (917, 23076), (1179, 17948), (1282, 16506), (1572, 13461), (1834, 11538), (1923, 11004), (2358, 8974), (2564, 8253), (2751, 7692), (3668, 5769), (3846, 5502), (4487, 4716)]