20154344

素因数分解:

$2^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:258

約数の個数: 64

約数和(自身を含む): 45308160

約数和(自身を除く): 25153816

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 56, 71, 74, 137, 142, 148, 259, 274, 284, 296, 497, 518, 548, 568, 959, 994, 1036, 1096, 1918, 1988, 2072, 2627, 3836, 3976, 5069, 5254, 7672, 9727, 10138, 10508, 18389, 19454, 20276, 21016, 35483, 36778, 38908, 40552, 68089, 70966, 73556, 77816, 136178, 141932, 147112, 272356, 283864, 359899, 544712, 719798, 1439596, 2519293, 2879192, 5038586, 10077172, 20154344]

約数ペア:

[(1, 20154344), (2, 10077172), (4, 5038586), (7, 2879192), (8, 2519293), (14, 1439596), (28, 719798), (37, 544712), (56, 359899), (71, 283864), (74, 272356), (137, 147112), (142, 141932), (148, 136178), (259, 77816), (274, 73556), (284, 70966), (296, 68089), (497, 40552), (518, 38908), (548, 36778), (568, 35483), (959, 21016), (994, 20276), (1036, 19454), (1096, 18389), (1918, 10508), (1988, 10138), (2072, 9727), (2627, 7672), (3836, 5254), (3976, 5069)]