19745892

素因数分解:

$2^2\times 3^2\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:273

約数の個数: 72

約数和(自身を含む): 51891840

約数和(自身を除く): 32145948

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 53, 79, 106, 131, 158, 159, 212, 237, 262, 316, 318, 393, 474, 477, 524, 636, 711, 786, 948, 954, 1179, 1422, 1572, 1908, 2358, 2844, 4187, 4716, 6943, 8374, 10349, 12561, 13886, 16748, 20698, 20829, 25122, 27772, 31047, 37683, 41396, 41658, 50244, 62094, 62487, 75366, 83316, 93141, 124188, 124974, 150732, 186282, 249948, 372564, 548497, 1096994, 1645491, 2193988, 3290982, 4936473, 6581964, 9872946, 19745892]

約数ペア:

[(1, 19745892), (2, 9872946), (3, 6581964), (4, 4936473), (6, 3290982), (9, 2193988), (12, 1645491), (18, 1096994), (36, 548497), (53, 372564), (79, 249948), (106, 186282), (131, 150732), (158, 124974), (159, 124188), (212, 93141), (237, 83316), (262, 75366), (316, 62487), (318, 62094), (393, 50244), (474, 41658), (477, 41396), (524, 37683), (636, 31047), (711, 27772), (786, 25122), (948, 20829), (954, 20698), (1179, 16748), (1422, 13886), (1572, 12561), (1908, 10349), (2358, 8374), (2844, 6943), (4187, 4716)]