81497384

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{337}}^1$

素因数の和:442

約数の個数: 64

約数和(自身を含む): 169540800

約数和(自身を除く): 88043416

約数列:

[1, 2, 4, 8, 19, 37, 38, 43, 74, 76, 86, 148, 152, 172, 296, 337, 344, 674, 703, 817, 1348, 1406, 1591, 1634, 2696, 2812, 3182, 3268, 5624, 6364, 6403, 6536, 12469, 12728, 12806, 14491, 24938, 25612, 28982, 30229, 49876, 51224, 57964, 60458, 99752, 115928, 120916, 236911, 241832, 275329, 473822, 536167, 550658, 947644, 1072334, 1101316, 1895288, 2144668, 2202632, 4289336, 10187173, 20374346, 40748692, 81497384]

約数ペア:

[(1, 81497384), (2, 40748692), (4, 20374346), (8, 10187173), (19, 4289336), (37, 2202632), (38, 2144668), (43, 1895288), (74, 1101316), (76, 1072334), (86, 947644), (148, 550658), (152, 536167), (172, 473822), (296, 275329), (337, 241832), (344, 236911), (674, 120916), (703, 115928), (817, 99752), (1348, 60458), (1406, 57964), (1591, 51224), (1634, 49876), (2696, 30229), (2812, 28982), (3182, 25612), (3268, 24938), (5624, 14491), (6364, 12806), (6403, 12728), (6536, 12469)]