21578232

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:173

約数の個数: 128

約数和(自身を含む): 63221760

約数和(自身を除く): 41643528

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 23, 24, 26, 31, 39, 46, 52, 62, 69, 78, 92, 93, 97, 104, 124, 138, 156, 184, 186, 194, 248, 276, 291, 299, 312, 372, 388, 403, 552, 582, 598, 713, 744, 776, 806, 897, 1164, 1196, 1209, 1261, 1426, 1612, 1794, 2139, 2231, 2328, 2392, 2418, 2522, 2852, 3007, 3224, 3588, 3783, 4278, 4462, 4836, 5044, 5704, 6014, 6693, 7176, 7566, 8556, 8924, 9021, 9269, 9672, 10088, 12028, 13386, 15132, 17112, 17848, 18042, 18538, 24056, 26772, 27807, 29003, 30264, 36084, 37076, 39091, 53544, 55614, 58006, 69161, 72168, 74152, 78182, 87009, 111228, 116012, 117273, 138322, 156364, 174018, 207483, 222456, 232024, 234546, 276644, 312728, 348036, 414966, 469092, 553288, 696072, 829932, 899093, 938184, 1659864, 1798186, 2697279, 3596372, 5394558, 7192744, 10789116, 21578232]

約数ペア:

[(1, 21578232), (2, 10789116), (3, 7192744), (4, 5394558), (6, 3596372), (8, 2697279), (12, 1798186), (13, 1659864), (23, 938184), (24, 899093), (26, 829932), (31, 696072), (39, 553288), (46, 469092), (52, 414966), (62, 348036), (69, 312728), (78, 276644), (92, 234546), (93, 232024), (97, 222456), (104, 207483), (124, 174018), (138, 156364), (156, 138322), (184, 117273), (186, 116012), (194, 111228), (248, 87009), (276, 78182), (291, 74152), (299, 72168), (312, 69161), (372, 58006), (388, 55614), (403, 53544), (552, 39091), (582, 37076), (598, 36084), (713, 30264), (744, 29003), (776, 27807), (806, 26772), (897, 24056), (1164, 18538), (1196, 18042), (1209, 17848), (1261, 17112), (1426, 15132), (1612, 13386), (1794, 12028), (2139, 10088), (2231, 9672), (2328, 9269), (2392, 9021), (2418, 8924), (2522, 8556), (2852, 7566), (3007, 7176), (3224, 6693), (3588, 6014), (3783, 5704), (4278, 5044), (4462, 4836)]