21345896

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{397}}^1$

素因数の和:474

約数の個数: 64

約数和(自身を含む): 48142080

約数和(自身を除く): 26796184

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 47, 52, 88, 94, 104, 143, 188, 286, 376, 397, 517, 572, 611, 794, 1034, 1144, 1222, 1588, 2068, 2444, 3176, 4136, 4367, 4888, 5161, 6721, 8734, 10322, 13442, 17468, 18659, 20644, 26884, 34936, 37318, 41288, 53768, 56771, 74636, 113542, 149272, 205249, 227084, 242567, 410498, 454168, 485134, 820996, 970268, 1641992, 1940536, 2668237, 5336474, 10672948, 21345896]

約数ペア:

[(1, 21345896), (2, 10672948), (4, 5336474), (8, 2668237), (11, 1940536), (13, 1641992), (22, 970268), (26, 820996), (44, 485134), (47, 454168), (52, 410498), (88, 242567), (94, 227084), (104, 205249), (143, 149272), (188, 113542), (286, 74636), (376, 56771), (397, 53768), (517, 41288), (572, 37318), (611, 34936), (794, 26884), (1034, 20644), (1144, 18659), (1222, 17468), (1588, 13442), (2068, 10322), (2444, 8734), (3176, 6721), (4136, 5161), (4367, 4888)]