21051291248

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{641}}^1\times {\mathrm{3851}}^1$

素因数の和:4554

約数の個数: 80

約数和(自身を含む): 45077552352

約数和(自身を除く): 24026261104

約数列:

[1, 2, 4, 8, 13, 16, 26, 41, 52, 82, 104, 164, 208, 328, 533, 641, 656, 1066, 1282, 2132, 2564, 3851, 4264, 5128, 7702, 8333, 8528, 10256, 15404, 16666, 26281, 30808, 33332, 50063, 52562, 61616, 66664, 100126, 105124, 133328, 157891, 200252, 210248, 315782, 341653, 400504, 420496, 631564, 683306, 801008, 1263128, 1366612, 2052583, 2468491, 2526256, 2733224, 4105166, 4936982, 5466448, 8210332, 9873964, 16420664, 19747928, 32090383, 32841328, 39495856, 64180766, 101208131, 128361532, 202416262, 256723064, 404832524, 513446128, 809665048, 1315705703, 1619330096, 2631411406, 5262822812, 10525645624, 21051291248]

約数ペア:

[(1, 21051291248), (2, 10525645624), (4, 5262822812), (8, 2631411406), (13, 1619330096), (16, 1315705703), (26, 809665048), (41, 513446128), (52, 404832524), (82, 256723064), (104, 202416262), (164, 128361532), (208, 101208131), (328, 64180766), (533, 39495856), (641, 32841328), (656, 32090383), (1066, 19747928), (1282, 16420664), (2132, 9873964), (2564, 8210332), (3851, 5466448), (4264, 4936982), (5128, 4105166), (7702, 2733224), (8333, 2526256), (8528, 2468491), (10256, 2052583), (15404, 1366612), (16666, 1263128), (26281, 801008), (30808, 683306), (33332, 631564), (50063, 420496), (52562, 400504), (61616, 341653), (66664, 315782), (100126, 210248), (105124, 200252), (133328, 157891)]