21000638946

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{393403}}^1$

素因数の和:393487

約数の個数: 64

約数和(自身を含む): 50758557696

約数和(自身を除く): 29757918750

約数列:

[1, 2, 3, 6, 7, 14, 21, 31, 41, 42, 62, 82, 93, 123, 186, 217, 246, 287, 434, 574, 651, 861, 1271, 1302, 1722, 2542, 3813, 7626, 8897, 17794, 26691, 53382, 393403, 786806, 1180209, 2360418, 2753821, 5507642, 8261463, 12195493, 16129523, 16522926, 24390986, 32259046, 36586479, 48388569, 73172958, 85368451, 96777138, 112906661, 170736902, 225813322, 256105353, 338719983, 500015213, 512210706, 677439966, 1000030426, 1500045639, 3000091278, 3500106491, 7000212982, 10500319473, 21000638946]

約数ペア:

[(1, 21000638946), (2, 10500319473), (3, 7000212982), (6, 3500106491), (7, 3000091278), (14, 1500045639), (21, 1000030426), (31, 677439966), (41, 512210706), (42, 500015213), (62, 338719983), (82, 256105353), (93, 225813322), (123, 170736902), (186, 112906661), (217, 96777138), (246, 85368451), (287, 73172958), (434, 48388569), (574, 36586479), (651, 32259046), (861, 24390986), (1271, 16522926), (1302, 16129523), (1722, 12195493), (2542, 8261463), (3813, 5507642), (7626, 2753821), (8897, 2360418), (17794, 1180209), (26691, 786806), (53382, 393403)]