20820456

素因数分解:

$2^3\times 3^3\times {\mathrm{41}}^1\times {\mathrm{2351}}^1$

素因数の和:2407

約数の個数: 64

約数和(自身を含む): 59270400

約数和(自身を除く): 38449944

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 41, 54, 72, 82, 108, 123, 164, 216, 246, 328, 369, 492, 738, 984, 1107, 1476, 2214, 2351, 2952, 4428, 4702, 7053, 8856, 9404, 14106, 18808, 21159, 28212, 42318, 56424, 63477, 84636, 96391, 126954, 169272, 192782, 253908, 289173, 385564, 507816, 578346, 771128, 867519, 1156692, 1735038, 2313384, 2602557, 3470076, 5205114, 6940152, 10410228, 20820456]

約数ペア:

[(1, 20820456), (2, 10410228), (3, 6940152), (4, 5205114), (6, 3470076), (8, 2602557), (9, 2313384), (12, 1735038), (18, 1156692), (24, 867519), (27, 771128), (36, 578346), (41, 507816), (54, 385564), (72, 289173), (82, 253908), (108, 192782), (123, 169272), (164, 126954), (216, 96391), (246, 84636), (328, 63477), (369, 56424), (492, 42318), (738, 28212), (984, 21159), (1107, 18808), (1476, 14106), (2214, 9404), (2351, 8856), (2952, 7053), (4428, 4702)]