21000944784

素因数分解:

$2^4\times 3^1\times {\mathrm{107}}^1\times {\mathrm{211}}^1\times {\mathrm{19379}}^1$

素因数の和:19708

約数の個数: 80

約数和(自身を含む): 55021835520

約数和(自身を除く): 34020890736

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 107, 211, 214, 321, 422, 428, 633, 642, 844, 856, 1266, 1284, 1688, 1712, 2532, 2568, 3376, 5064, 5136, 10128, 19379, 22577, 38758, 45154, 58137, 67731, 77516, 90308, 116274, 135462, 155032, 180616, 232548, 270924, 310064, 361232, 465096, 541848, 930192, 1083696, 2073553, 4088969, 4147106, 6220659, 8177938, 8294212, 12266907, 12441318, 16355876, 16588424, 24533814, 24882636, 32711752, 33176848, 49067628, 49765272, 65423504, 98135256, 99530544, 196270512, 437519683, 875039366, 1312559049, 1750078732, 2625118098, 3500157464, 5250236196, 7000314928, 10500472392, 21000944784]

約数ペア:

[(1, 21000944784), (2, 10500472392), (3, 7000314928), (4, 5250236196), (6, 3500157464), (8, 2625118098), (12, 1750078732), (16, 1312559049), (24, 875039366), (48, 437519683), (107, 196270512), (211, 99530544), (214, 98135256), (321, 65423504), (422, 49765272), (428, 49067628), (633, 33176848), (642, 32711752), (844, 24882636), (856, 24533814), (1266, 16588424), (1284, 16355876), (1688, 12441318), (1712, 12266907), (2532, 8294212), (2568, 8177938), (3376, 6220659), (5064, 4147106), (5136, 4088969), (10128, 2073553), (19379, 1083696), (22577, 930192), (38758, 541848), (45154, 465096), (58137, 361232), (67731, 310064), (77516, 270924), (90308, 232548), (116274, 180616), (135462, 155032)]