19985784

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{9151}}^1$

素因数の和:9180

約数の個数: 64

約数和(自身を含む): 61501440

約数和(自身を除く): 41515656

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 24, 26, 28, 39, 42, 52, 56, 78, 84, 91, 104, 156, 168, 182, 273, 312, 364, 546, 728, 1092, 2184, 9151, 18302, 27453, 36604, 54906, 64057, 73208, 109812, 118963, 128114, 192171, 219624, 237926, 256228, 356889, 384342, 475852, 512456, 713778, 768684, 832741, 951704, 1427556, 1537368, 1665482, 2498223, 2855112, 3330964, 4996446, 6661928, 9992892, 19985784]

約数ペア:

[(1, 19985784), (2, 9992892), (3, 6661928), (4, 4996446), (6, 3330964), (7, 2855112), (8, 2498223), (12, 1665482), (13, 1537368), (14, 1427556), (21, 951704), (24, 832741), (26, 768684), (28, 713778), (39, 512456), (42, 475852), (52, 384342), (56, 356889), (78, 256228), (84, 237926), (91, 219624), (104, 192171), (156, 128114), (168, 118963), (182, 109812), (273, 73208), (312, 64057), (364, 54906), (546, 36604), (728, 27453), (1092, 18302), (2184, 9151)]